Article
Engineering, Mechanical
Yucai Hu, Yexin Zhou, Haiyi Liang
Summary: This article presents a method for constructing generalized Miura-ori patterns that can approximate three-dimensional parametric surfaces while preserving the properties of standard Miura-ori. By placing vertices on the target surfaces and performing constrained optimization, rigid folding from the flat state to the target state with a single degree-of-freedom is achieved.
JOURNAL OF MECHANISMS AND ROBOTICS-TRANSACTIONS OF THE ASME
(2021)
Article
Engineering, Civil
Hemant Sharma, S. H. Upadhyay
Summary: This research focuses on the geometric analysis and quasistatic behavior of toroidal folding patterns based on the four-fold line origami concept. It presents a sequential design process and a generalized design algorithm for developing toroidal origami structures. Experimental setups and methodologies are developed to investigate the quasistatic behavior of single and multi-story toroidal patterns.
THIN-WALLED STRUCTURES
(2022)
Article
Mathematics
Dylan C. Webb, Elissa Reynolds, Denise M. Halverson, Larry L. Howell
Summary: This article introduces a new design for smooth sheet attachment that can unfold simultaneously with zipper-coupled tubes to cover the entire surface without additional actuation, and it is compatible with asymmetric zipper-coupled tubes.
Article
Nanoscience & Nanotechnology
Seyeon Park, Eiyong Park, Minjae Lee, Sungjoon Lim
Summary: This paper proposes a 4D-printed multimaterial Miura origami structure for RF spectrum applications, which can achieve shape morphing antenna arrays through thermal actuation.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Mechanics
Haotian Feng, Guanjin Yan, Pavana Prabhakar
Summary: This paper explores the impact of directional material properties on the mechanical responses of origami structures, focusing on the Miura-Ori structures. By studying carbon fiber reinforced polymer (CFRP) composites and the geometric parameters of Miura-Ori, the paper demonstrates that CFRP composites can achieve higher stiffness and Poisson's ratio than isotropic materials. Regression analysis reveals the relationship between geometric parameters and mechanical responses, leading to the discovery of optimal Miura-Ori structures. The research provides valuable insights for designing and optimizing origami structures incorporating composite materials.
COMPOSITE STRUCTURES
(2023)
Article
Construction & Building Technology
Qian Zhang, Xinyu Wang, Daniel Sang-hoon Lee, Jianguo Cai, Zheng Ren, Jian Feng
Summary: The paper investigates the design and kinematic behavior of a novel origami canopy, demonstrating its design process and performance evaluation results. It proposes a calculated method to determine geometry parameters with different constraint conditions for different target configurations. The study opens a novel avenue for the design of curved shapes using Miura-ori in various fields.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Engineering, Mechanical
Hunter T. Pruett, Abdul-Sattar Kaddour, Stavros V. Georgakopoulos, Larry L. Howell, Spencer P. Magleby
Summary: Trends in the aerospace industry drive the need for smaller, cheaper, yet high-gain antennas. This study presents a thick, flat-foldable origami design, called volume-efficient Miura-ori (VEMO), for deployable reflectarray antennas. By maximizing the surface area while meeting volume and aspect ratio constraints, the VEMO design offers an efficient solution for antenna applications.
EXTREME MECHANICS LETTERS
(2022)
Article
Mechanics
Chenjie Zhao, Ming Li, Xin Zhou, Tianming Liu, Jian Xing, Yan Chen, Xiao Zhang
Summary: In this paper, a deployable structure for a planar antenna with one degree of freedom and a flat reflection surface is proposed based on a double-layer Miura-ori pattern. The antenna folding scheme with rectangular facets is proposed and a deployable antenna mechanism with a flat reflection surface is accomplished. A kinematic model is established to analyze the kinematic characteristics and prove the equivalence of motion before and after changing the hinges. A compatible back frame for the planar antenna mechanism is designed and fabricated.
MECHANICS RESEARCH COMMUNICATIONS
(2023)
Article
Engineering, Mechanical
Sen Wang, Jinshan Wu, Peng Yan, Hailin Huang, Bing Li, Rongqiang Liu
Summary: This paper proposes a planar deployable circular structure (DCS) based on the Miura-ori pattern, as well as the design of system parameters and an optimization model for the deploy/fold ratio. Another method for designing curved-surface DCS is proposed that is based on the parallel projection principle. Suitable numerical design methods for obtaining the vertices of planar and curved-surface DCSs are summarized. The actuation methods for planar and curved-surface deployable structures are presented. The feasibility of the proposed design approach is verified through fabrication of physical prototypes and deployment experiments.
MECHANISM AND MACHINE THEORY
(2023)
Article
Materials Science, Multidisciplinary
Tomi Kankkunen, Jarkko Niiranen, Jarmo Kouko, Miia Palmu, Kirsi Peltonen
Summary: Sandwich structures with Miura-ori cores have been studied in aerospace industry, but this study focuses on the mechanical performance of planar, self-supporting Miura-ori structures under compressive loads. By analyzing the effects of geometric parameters and material orthotropy, the study provides a basis for structural design.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2022)
Article
Engineering, Civil
Yuntong Du, Thomas Keller, Changping Song, Zhenqian Xiao, Linzhi Wu, Jian Xiong
Summary: This study presents a methodology for designing cylindrical origami with different patterns and cross-sectional shapes, and proves the foldability and developability of curved-crease patterns. It explores the relationships between 2D crease lines in a sheet and 3D spatial origami structures, paving the way for applications in engineering such as energy absorption.
THIN-WALLED STRUCTURES
(2021)
Article
Engineering, Mechanical
Diana Bolanos, Collin Ynchausti, Nathan Brown, Hunter Pruett, Jared Hunter, Brooklyn Clark, Terri Bateman, Larry L. Howell, Spencer P. Magleby
Summary: The Miura-ori pattern has favorable qualities for designing deployable space arrays, but also poses challenges such as thickness-accommodation, nesting, grounding, and deployment. It is important to address and mitigate these challenges when designing Miura-ori systems.
MECHANISM AND MACHINE THEORY
(2022)
Article
Engineering, Civil
Ali Mohammadsalehi, Davood Mostofinejad
Summary: Rapid construction and reducing building weight are the goals of civil engineers. Canvas concrete is a promising material for rapid construction, while origami construction is efficient and lightweight. This study investigated folded plates with origami patterns made of canvas concrete. The Miura pattern was combined with high-performance concrete reinforced with 3D spacer fabric. The results showed that Miura patterns with sharper angles provided greater load-bearing capacity, energy absorption, and maximum load/weight ratios.
Article
Construction & Building Technology
Betul Kahramanoglu, Nese Cakici Alp
Summary: The paper presents a design for a responsive facade model based on origami principles that aim to enhance visual comfort for building occupants. The model features kinetic elements that reduce solar heat gain while maintaining visual comfort. To evaluate visual comfort, the study used a simulation model that considers key daylight performance metrics. The results showed that the proposed origami-based responsive facade outperforms the base scenario in terms of daylight performance enhancement.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Mechanical
Anandaroop Lahiri, Phanisri P. Pratapa
Summary: Origami is gaining prominence in metamaterial research due to its ability to tune properties of interest through changes in folding states. This paper proposes an analytical framework based on folding angles for the study of rigid-panel origami lattices, specifically Miura-ori patterns. The findings demonstrate the tunable and programmable nature of the structure and its potential as acoustic metamaterials.
JOURNAL OF MECHANISMS AND ROBOTICS-TRANSACTIONS OF THE ASME
(2023)
Article
Engineering, Mechanical
Ting-Uei Lee, Xiaochen Yang, Jiayao Ma, Yan Chen, Joseph M. Gattas
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2019)
Article
Engineering, Civil
Ya Ou, Joseph M. Gattas, Dilum Fernando, Jose L. Torero
ENGINEERING STRUCTURES
(2020)
Article
Engineering, Civil
Quan Shi, Michael T. Heitzmann, Joseph M. Gattas
ENGINEERING STRUCTURES
(2020)
Article
Materials Science, Multidisciplinary
Tanmoy Mukhopadhyay, Jiayao Ma, Huijuan Feng, Degao Hou, Joseph M. Gattas, Yan Chen, Zhong You
APPLIED MATERIALS TODAY
(2020)
Article
Engineering, Civil
Zhuoyang Xin, Joseph Gattas
Summary: This study investigates the compressive failure mechanisms of full-length integrally-jointed plywood box columns, identifying a new critical failure mechanism where column capacity is governed by defect-induced transverse loading of integral box joints. Results show that column capacity can be improved through localized joint strengthening or by avoiding defects during component plate machining.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2021)
Article
Mechanics
Weiqi Cui, Dilum Fernando, Michael Heitzmann, Joseph M. Gattas
Summary: Hybrid FRP-timber (HFT) thin-walled sections are high-performance and lightweight wood-based composite structures, with an improved modular manufacturing method proposed in this study. Experimental and numerical studies show that GFRP wrapping material has the most significant influence on section behavior, and increasing GFRP layers improves section strength and stiffness.
COMPOSITE STRUCTURES
(2021)
Article
Multidisciplinary Sciences
Aurimas Bukauskas, Antiopi Koronaki, Ting-Uei Lee, Daniel Ott, M. Wesam Al Asali, Aftab Jalia, Tom Bashford, Ana Gatoo, Josh Newman, Joseph M. Gattas, Darshil U. Shah, Michael Ramage
Summary: The paper introduces a simple, fast, and cost-effective curved-crease origami technique for making face shields, which could potentially meet global demand for personal protective equipment, especially in Low and Middle-Income countries. The design allows for production using various manufacturing methods and can be adapted to different ergonomic and protection requirements through a physical-digital parametric design methodology.
Article
Materials Science, Multidisciplinary
Ting-Uei Lee, Yan Chen, Michael T. Heitzmann, Joseph M. Gattas
Summary: This study introduces a new type of compliant curved-crease origami-inspired metamaterial constructed with an 'elastica' non-zero principal surface curvature, showing influence of construction parameters on nonlinear force-displacement response characteristics. The development of a concise analytical method allows for rapid prediction and direct design of a metamaterial with a fully programmable compliant force-displacement response.
MATERIALS & DESIGN
(2021)
Article
Engineering, Civil
Ya Ou, Dilum Fernando, Jasotharan Sriharan, Joseph M. Gattas, Shishun Zhang
Summary: Timber-concrete composite panels are a sustainable alternative for reinforced concrete floor construction systems, and new numerical modeling methods have been developed to improve their performance.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Civil
Yousef Alqaryouti, Dilum Fernando, Joseph M. Gattas
Summary: This paper investigates the mechanical behavior of folded timber sandwich structures developed using integral rotational press-fit joints. Experimental testing shows failures occurring at joint locations with maximum hogging moment, with bending and tensile as the main failure modes. A nonlinear model and simplified frame model are proposed to predict the FRP fracture modes.
THIN-WALLED STRUCTURES
(2021)
Article
Engineering, Civil
Zhuo-Yang Xin, Kim Baber, Joseph M. Gattas
Summary: Emergency temporary housing is crucial for post-disaster response and recovery. This paper introduces a novel 'strap joint' that allows for the rapid assembly of lightweight timber elements and prefabricated panels. The joint utilizes a low-cost and widely available packaging strap material to create a semi-rigid and adaptable structural connection. Experimental, numerical, and theoretical studies confirm the joint's structural behavior and a portal frame model and full-scale prototype demonstrate the effectiveness of the proposed strap connection for emergency housing applications.
ENGINEERING STRUCTURES
(2022)
Article
Construction & Building Technology
Tomas Bravo Tetlak, Joseph M. Gattas, Cristian Maluk
Summary: The research and development of timber and timber-hybrid systems often face limitations in testing large-scale components due to space and budget constraints. Downscale testing of timber is known to be susceptible to changes in material properties, but little is known about the evaluation of serviceability performance measures. This study explores the effect of scaling down Glulam and hybrid carbon fibre reinforced Glulam beams and highlights the variations in serviceability and strength parameters.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Multidisciplinary Sciences
Kim R. Baber, Jane R. Burry, Canhui Chen, Joseph M. Gattas, Aurimas Bukauskas
SN APPLIED SCIENCES
(2020)
Proceedings Paper
Construction & Building Technology
Kim R. Baber, Jane R. Burry, Canhui Chen, Joseph M. Gattas, Aurimas Bukauskas
IASS 60TH ANNIVERSARY SYMPOSIUM (IASS SYMPOSIUM 2019) - 9TH INTERNATIONAL CONFERENCE ON TEXTILE COMPOSITES AND INFLATABLE STRUCTURES (STRUCTURAL MEMBRANES 2019)
(2019)
Article
Engineering, Civil
Kevin B. Plasencia Alava, Lee K. McCann, Gabrielle Hodge, Kim Baber, Joseph M. Gattas
JOURNAL OF THE INTERNATIONAL ASSOCIATION FOR SHELL AND SPATIAL STRUCTURES
(2019)
Article
Engineering, Civil
Renbing An, Jiacong Yuan, Yi Pan, Duhang Yi
Summary: Traditional timber structures built on sloped land are more susceptible to seismic damage compared to structures built on flat land. The upper portion of the structure is found to be the weak point on sloped land, with potential issues such as tenon failure and column foot sliding.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Elyas Bayat, Federica Tubino
Summary: The current design guidelines for assessing floor vibration performance do not consider the influence of variability in the walking path on the dynamic response of floors. This study investigates the dynamic response of floors under a single pedestrian walking load, taking into account the randomness of the walking path and load. The effectiveness of the current guidelines in predicting floor response is critically assessed.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Gao Ma, Chunxu Hou, Hyeon-Jong Hwang, Linghui Chen, Zhenhao Zhang
Summary: Minimizing earthquake damage and improving repair efficiency are the main principles of resilient structures. This study proposed a repairable column with UHPC segments and replaceable energy dissipaters. The test results showed that the columns with UHPC segments and replaceable dissipaters exhibited high strength, deformation capacity, and energy dissipation.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Kartheek S. M. Sonti, Pavan Kumar Penumakala, Suresh Kumar Reddy Narala, S. Vincent
Summary: In this study, the compressive behavior of alumina hollow particles reinforced aluminum matrix syntactic foams (AMSF) was investigated using analytical, numerical, and experimental methods. The results showed that the FE solver ABAQUS could accurately predict the elastic and elastio-plastic behavior of AMSFs. The study also suggested that FE models have great potential in developing new materials and composites under compression loading.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Zheqi Peng, Xin Wang, Zhishen Wu
Summary: In this study, the statistical modeling of fiber-reinforced polymer (FRP) cables using the classic fiber bundle model is explored. The study considers important features of large-scale multi-tendon FRP cables, such as initial random slack and uneven tensile deformation among tendons. A parametric study and reliability analysis are conducted to predict the load-displacement relation and design thousand-meter-scale FRP cables. The study emphasizes the relation between the reliability index beta of the cable and the safety factor gamma of the FRP material.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Yanchao Shi, Shaozeng Liu, Ye Hu, Zhong-Xian Li, Yang Ding
Summary: This paper introduces a damage assessment method for reinforced concrete (RC) columns under blast loading, using modal parameter measurement as the evaluation index. The validity of the proposed method is validated through numerical and experimental analysis. The results show that this modal-based damage assessment method is applicable for non-destructive evaluation of blast-induced damage of RC columns.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Xiaolin Zou, Maosheng Gong, Zhanxuan Zuo, Qifang Liu
Summary: This paper proposes an efficient framework for assessing the collapse capacity of structures in earthquake engineering. The framework is based on an accurate equivalent single-degree-of-freedom (ESDOF) system, calibrated by a meta-heuristic optimization method. The proposed framework has been validated through case studies, confirming its accuracy and efficiency.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Jie Hu, Weiping Wen, Chenyu Zhang, Changhai Zhai, Shunshun Pei, Zhenghui Wang
Summary: A deep learning-based rapid peak seismic response prediction model is proposed for the most common two-story and three-span subway stations. The model predicts the peak seismic responses of subway stations using a data-driven approach and limited information, achieving good predictive performance and generalization ability, and demonstrating significantly higher computational efficiency compared to numerical simulation methods.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Jin Ho Lee, Jeong-Rae Cho
Summary: A simplified model is proposed to estimate the earthquake responses of a rectangular liquid storage tank considering the fluid-structure interactions. The complex three-dimensional structural behavior of the tank is represented by a combination of fundamental modes of a rectangular-ring-shaped frame structure and a cantilever beam. The system's governing equation is derived, and earthquake responses such as deflection, hydrodynamic pressure, base shear, and overturning moment are obtained from the solution.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
W. J. Lewis, J. M. Russell, T. Q. Li
Summary: The work discusses the key features and advantages of optimal 2-pin arches shaped by statistically prevalent load and constant axial stress. It extends the design space of symmetric arches to cover asymmetric forms and provides minimum values of constant stress for form-finding of such arches made of different materials. The analysis shows that constant stress arches exhibit minimal stress response and have potential implications for sustainability and durability of future infrastructure.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Wen-ming Zhang, Han-xu Zou, Jia-qi Chang, Tian-cheng Liu
Summary: Saddle position is crucial in the construction and control of suspension bridges. This study proposes an analytical approach to estimate the saddle positions in the completed bridge state and discusses the calculation under different definitions. The relationship between the saddle position and the tower's centerline is analyzed, along with the eccentric compression of the tower. The feasibility of the proposed method is verified through a real-life suspension bridge.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Shaise K. John, Alessio Cascardi, Yashida Nadir
Summary: This study experimentally investigated the use of TRM material for reinforcing concrete columns. The results showed that increasing the number of textile layers effectively increased the axial strength. Additionally, the choice of fiber type and hybrid textile configuration also had a significant impact on strength improvement. A new design model that considers the effects of both the confining matrix and textile was proposed.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Chandrashekhar Lakavath, S. Suriya Prakash
Summary: This study experimentally investigated the shear behavior of post-tensioned UHPFRC girders, considering factors such as prestress level, fiber volume fraction, and types of steel fibers. The results showed that increasing prestress and fiber dosage could enhance the ultimate load-carrying capacity of the girders, reduce crack angle, and increase shear cracking load.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Vahid Goodarzimehr, Siamak Talatahari, Saeed Shojaee, Amir H. Gandomi
Summary: In this paper, an Improved Marine Predators Algorithm (IMPA) is proposed for size and shape optimization of truss structures subject to natural frequency constraints. The results indicate that IMPA performs better in solving these nonlinear structural optimization problems compared to other state-of-the-art algorithms.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Chun-Xu Qu, Jin-Zhao Jiang, Ting-Hua Yi, Hong-Nan Li
Summary: In this paper, a computer vision-based method is proposed to monitor the deformation and displacement of building structures by obtaining 3D coordinates of surface feature points. The method can acquire a large number of 3D coordinates in a noncontact form, improve the flexibility and density of measurement point layout, and is simple and cost-effective to operate.
ENGINEERING STRUCTURES
(2024)
