Article
Engineering, Mechanical
Zhubin He, Kun Zhang, Haihui Zhu, Yanli Lin, M. W. Fu, Shijian Yuan
Summary: A enhanced constitutive model was proposed to accurately model the deformation behaviors of complex thin-walled tubular parts under both biaxial tension and pure shear stress conditions. The model was validated and compared with existing anisotropic constitutive models, and its accuracy and efficiency were demonstrated through forming experiments.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Materials Science, Characterization & Testing
Hanane Attar, Yun-Mei Luo, Luc Chevalier, Thanh Tung Nguyen, Fabrice Detrez
Summary: The stretch blowing process of PET bottle results in anisotropic mechanical properties, where the elongation of macromolecular chains is different. The orthotropic elastic properties can be obtained by measuring the displacement field using image correlation and using the virtual field method on a specific cruciform specimen with a hole. The identified constitutive parameters are compared to results obtained by classical methods.
Article
Mechanics
Daniel J. O'Shea, Mario M. Attard, David C. Kellermann
Summary: Microscopic imaging techniques for soft biological tissues have advanced understanding of their microstructures, particularly the alignment and dispersion of fibrous constituents. This paper aims to extend hyperelasticity representation for anisotropic bodies using FOSTs to incorporate the effects of fiber dispersion. The framework provides fourteen generalised FOSTs for two-direction preferred hyperelasticity, including dispersed fiber families.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2022)
Article
Engineering, Civil
Zhihua Xiong, Chenyu Zhao, Yuqing Liu, Haohui Xin, Yang Meng
Summary: This study investigated the stress concentration of pultruded GFRP perforated plates under different stress states, proposed improvement measures to address stress concentration, and discussed the importance of biaxial tension-compression status in the structural analysis of perforated plates.
Article
Engineering, Biomedical
Mingliang Jiang, Raghuveer Lalitha Sridhar, Andrew B. Robbins, Alan D. Freed, Michael R. Moreno
Summary: Uniaxial testing is common for mechanical analysis of biological materials, but biaxial testing offers a more comprehensive understanding. Custom biaxial testing systems can overcome limitations of commercially available systems, providing a wider range of testing capabilities.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Guangang Wang, Guangsheng Huang, Ke Liu, Junlei Zhang, Bin Jiang, Aitao Tang, Fusheng Pan
Summary: The study investigated the different deformation behaviors of magnesium alloys under different stress states. It was found that magnesium alloys with weaker texture distribution did not necessarily exhibit better plasticity and formability, possibly due to enhanced grain boundary cohesion with increased zinc content. Additionally, the work hardening behavior of the alloys varied depending on the load direction.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Polymer Science
Noelle Billon
Summary: Conventional biaxial testing and free stretch blow molding (ISBM) of preforms were conducted to analyze the biaxial behavior of PET and strain-induced crystallization (SIC) under biaxial conditions. Stretch blowing promoted complex loading paths, allowing for local analysis using marked preforms. The time-temperature superposition principle applied up to high strain in biaxial conditions, facilitating experimental sets and mechanical comparisons. X-ray diffraction analyzed the crystal microstructure and texture, showing that the texture in ISBM is not a simple image of the final deformation state.
Article
Mathematics, Applied
Ankush Aggarwal, Damiano Lombardi, Sanjay Pant
Summary: The study proposes a new optimal design framework based on information-theoretic measures, tested on protocols for estimating hyperelastic model parameters in biaxial soft tissue experiments. Results indicate that lower angles have lower information content compared to higher angles, and fewer angles with appropriate combinations can lead to higher information gains.
Article
Materials Science, Multidisciplinary
Rui F. Sampaio, Joao P. M. Pragana, Ivo M. F. Braganca, Carlos M. A. Silva, Paulo A. F. Martins
Summary: This paper presents a new upset formability test geometry and an analytical expression for characterizing the formability limits of bulk metal forming parts. The authors use a combination of experimentation, analytical modeling, and numerical simulation to study fracture in bulk metal forming parts subject to stress-triaxiality values beyond uniaxial tension, aiming to fill the knowledge gap in this area.
INTERNATIONAL JOURNAL OF DAMAGE MECHANICS
(2022)
Article
Chemistry, Multidisciplinary
Bahram Mirani, Sean O. Mathew, Neda Latifi, Michel R. Labrosse, Brian G. Amsden, Craig A. Simmons
Summary: In this study, a novel method combining computational modeling, melt electrowriting (MEW), and design of experiments (DOE) is reported to generate scaffolds with prescribed mechanical properties to mimic the nonlinear and anisotropic behavior of three model tissues. The optimized scaffold architecture is then used to create functional scaffolds with accurate mechanics, which can also be used for tissue engineering applications.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Computer Science, Interdisciplinary Applications
Husnu Dal, Alp Kagan Acan, Ciara Durcan, Mokarram Hossain
Summary: In this work, twelve invariant and dispersion-type anisotropic hyperelastic constitutive models for soft biological tissues are reviewed based on their fitting performance to various experimental data. A hybrid multi-objective optimization procedure and a genetic algorithm are used to generate initial guesses followed by a gradient-based search algorithm. The models are then fit to uniaxial and biaxial tension experiments conducted on tissues with different histology. The investigation reveals superior fitting performance of dispersion-type anisotropic constitutive formulations over invariant formulations.
ARCHIVES OF COMPUTATIONAL METHODS IN ENGINEERING
(2023)
Article
Engineering, Biomedical
Edwin Wong, Shouka Parvin Nejad, Katya A. D'Costa, Nataly Machado Siqueira, Monica Lecce, J. Paul Santerre, Craig A. Simmons
Summary: Tissue engineered heart valves (TEHVs) are a potential solution for congenitally diseased heart valves. Researchers designed a mechanobioreactor to mimic anisotropic strain for TEHVs in vitro.
ANNALS OF BIOMEDICAL ENGINEERING
(2022)
Article
Chemistry, Analytical
Peng Wang, Yujun Yang, Manlong Chen, Changming Zhang, Nan Wang, Fan Yang, Chunlei Peng, Jike Han, Yuqiang Dai
Summary: To meet the measurement needs of multidimensional high-g acceleration in fields such as weapon penetration, aerospace, and explosive shock, a biaxial piezoresistive accelerometer incorporating tension-compression is meticulously designed. The study thoroughly examines the tension-compression measurement mechanism and designs the sensor's sensitive structure. It develops a signal test circuit to effectively mitigate cross-interference and applies the finite element method to analyze the structure and obtain the performance indices of the sensor.
Article
Engineering, Mechanical
Florian Dexl, Andreas Hauffe, Johannes Markmiller, Klaus Wolf
Summary: Biaxial tensile tests are important for characterizing materials, especially ductile ones, as they provide a yield strength curve that separates elastic and plastic material behavior. However, designing a specimen with an equivalent stress close to the yield strength requires a balance between maintaining constant thickness and stiffness for unconstrained deformation and preventing premature failure from stress concentrations. This study addresses this problem through multi-objective structural optimization using Evolutionary Algorithms, analyzing the influence of thickness distribution, sizing of the border region, and the type of actuators used. The results offer valuable insights and design proposals for optimal biaxial tensile test specimens.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Jian-Zhi Chen, Bin Zhang, Zhu-Man Song, Guang-Ping Zhang
Summary: The biaxial tension-torsion in-phase fatigue properties of a welded joint and base material of an A588 steel train bogie were compared. The relation between equivalent stress amplitude and cyclic fatigue life was determined. Results show that the welded joint specimen has a higher fatigue life than the base material at higher stress amplitudes, but the two become closer at lower stress amplitudes. A critical stress range of 368 MPa to 396 MPa dominates the fatigue damage behavior of the welded joint. When stress amplitude exceeds the critical stress, fatigue crack initiation tends to occur at the boundary between the base material and heat-affected zone, while cracks originate from the weld metal zone under lower stress amplitudes. Comprehensive analysis of microstructure and residual stress distribution provides insights for optimizing fatigue performance of welded metallic components.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Mathematics, Interdisciplinary Applications
Shubham Gupta, Subhodip Chatterjee, Ayush Malviya, Gurpreet Singh, Arnab Chanda
Summary: Slips and falls are serious public safety hazards, and adequate shoe-floor traction is important in reducing these risks. However, there has been limited research on the influence of outsole design on footwear traction performance. This study developed nine different outsole designs and tested their traction, fluid pressures, and flow rates. The results showed that wider tread surfaces and larger gaps had increased slip risks and better traction performance on wet flooring. These findings provide valuable insights for footwear manufacturers in optimizing outsole surface design and addressing the problem of slips and falls. The CFD-based computational framework used in this study also has the potential to develop better outsole designs in the future.
Article
Materials Science, Multidisciplinary
Vivek Gupta, Rohan Singla, Gurpreet Singh, Arnab Chanda
Summary: Human skin exhibits diverse mechanical properties and anisotropy across different body locations, which is due to varying fiber distributions and orientations. This study created unique anisotropic synthetic skin samples with consistent fiber density and dimensions but varying fiber angles. The stress-strain responses of these compositions were compared to that of human skin, and hyperelastic constitutive models were used for characterization. The created anisotropic synthetic skin has important applications in biomechanical research, medical training, and studying skin pathophysiology and injuries.
Article
Mathematics, Interdisciplinary Applications
Mohammad Afazal, Shubham Gupta, Abhishek Tevatia, Saba Afreen, Arnab Chanda
Summary: Dental trauma is a global health issue that often leads to tooth loss and affects quality of life. The use of dental implants is a common solution, with platform switching and platform matching being the adopted methods. In this computational study, different platform-switched and platform-matched implant-abutment configurations were compared to assess mechanical parameters. The results showed that platform switching can reduce stress and deformation in the peri-implant bone, potentially limiting marginal bone loss. However, the same parameters increased more in the abutment, implant, and screw for platform-switched implants compared to platform-matched implants. This study provides valuable guidance for clinicians in selecting appropriate methods.
Article
Physics, Fluids & Plasmas
Shubham Gupta, Subhodip Chatterjee, Arnab Chanda
Summary: Accidental injuries caused by slips and falls are a serious threat to public safety. Adequate friction between footwear and flooring is crucial in reducing slip-related risks. The presence of slippery fluidic contaminants, like water, further reduces friction and increases the chances of slip-related accidents.
Review
Engineering, Multidisciplinary
Vivek Gupta, Gurpreet Singh, Shubham Gupta, Arnab Chanda
Summary: The expansion of conventional prosthetic skin grafts is insufficient for treating large and severe burn injuries. However, auxetic materials with negative Poisson's effect show potential for expanding prosthetic skin grafts and covering large burn injury sites. This review article summarizes the design and analysis of auxetic skin grafts, aiming to advance burn mitigation research and facilitate the development of prosthetic skin grafts for severe burns.
ENGINEERING RESEARCH EXPRESS
(2023)
Article
Materials Science, Biomaterials
Komal Chhikara, Shubham Gupta, Dhruv Bose, Chitra Kataria, Arnab Chanda
Summary: People with mid-cervical SCI face difficulties in daily activities due to weakened flexor muscles. This study developed a 3D-printed dynamic orthosis to assist SCI patients in their daily activities. The orthosis, based on a worm-gear mechanism, showed satisfactory performance, improved quality of life, and increased independence during rehabilitation.
Article
Materials Science, Multidisciplinary
Vivek Gupta, Arnab Chanda
Summary: This study experimentally tested the effect of novel auxetic slit patterns on skin graft expansion. The findings may shed light on the potential use of auxetic slit patterns to generate higher expansions in skin grafts.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
Vivek Gupta, Arnab Chanda
Summary: In this study, novel synthetic skin grafts with alternating slit (AS) shaped cut patterns were developed and tested to evaluate the expansion potentials offered by auxetic or negative Poisson's ratio structures in skin grafting. The findings indicated that the expansion of the grafts was negatively related to the spacing between slits, and low strains exhibited high auxeticity. This research is important for advancing the treatment of large burn injuries.
MATERIALS RESEARCH EXPRESS
(2023)
Article
Mathematics, Interdisciplinary Applications
Rohan Singla, Shubham Gupta, Arnab Chanda
Summary: This study simulated different stages of aneurysm growth by modeling the anterior cerebral artery and creating aneurysms at vulnerable locations. The risk of rupture was predicted by evaluating the distribution of pressure, wall shear stress, and flow velocity, revealing the correlation between aneurysm size and wall thickness with rupture risk. These findings will aid physicians in predicting rupture risk based on aneurysm diameter and making early treatment decisions.
MATHEMATICAL AND COMPUTATIONAL APPLICATIONS
(2023)
Article
Mathematics, Interdisciplinary Applications
Vivek Gupta, Arnab Chanda
Summary: Burn injuries are common and the traditional skin grafting technique has limitations in covering larger burn areas. This study explores the possibility of using innovative auxetic skin graft patterns to improve expansion potential and biomechanical properties.
MATHEMATICAL AND COMPUTATIONAL APPLICATIONS
(2023)
Article
Mathematics, Interdisciplinary Applications
Anshika Garg, Shubham Gupta, Nitesh Tewari, Sukeshana Srivastav, Arnab Chanda
Summary: Traumatic dental injuries (TDI) are common, with a prevalence ranging from 12-22%, and crown and crown-root fractures being the most frequent. This study aimed to assess the efficacy of different adhesive materials in reattaching these fractures through computational modelling. A full-scale 3D tooth model was developed using 3D scanned images, and the fractured models were filled with three commonly used adhesive materials and tested under masticatory and traumatic loading conditions. The flowable composite showed the lowest stress under masticatory loading, while resin cement showed reduced stress values for crown-root fractures after reattachment using adhesive materials. Resin cement also demonstrated lower displacements and stress values during traumatic loading. These findings can assist dentists in selecting appropriate adhesive materials to minimize stress on the reattached tooth during second trauma, for both crown and crown-root fractures.
MATHEMATICAL AND COMPUTATIONAL APPLICATIONS
(2023)
Article
Materials Science, Biomaterials
Komal Chhikara, Sarabjeet Singh Sidhu, Shubham Gupta, Sakshi Saharawat, Chitra Kataria, Arnab Chanda
Summary: Plantar foot pain is a common condition in occupations that require prolonged standing, such as nursing. The etiology of plantar foot pain is unclear but likely multifactorial, with increased standing hours being a risk factor. Current treatment methods, such as orthoses and insoles, have limited customization and scientific advancements. This study developed a novel 3D-printed customized foot orthosis and found that it effectively reduced pain and pressure, and improved functional ability in nurses compared to traditional methods.
Article
Computer Science, Interdisciplinary Applications
Ashique Ellahi, Shubham Gupta, Dhruv Bose, Arnab Chanda
Summary: Injuries from car crashes are common worldwide, causing over 1.3 million fatalities annually. Lack of safety assessment infrastructure in middle- and low-income countries results in 93% of these fatalities. Hence, accurately predicting the extent of occupant injuries in car crashes is crucial for safer vehicle design.
COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING
(2023)
