Article
Biophysics
Oleksandr V. Martynenko, Fabian Kempter, Christian Kleinbach, Lennart V. Noelle, Patrick Lerge, Syn Schmitt, Joerg Fehr
Summary: This study addresses the challenges in using active human body models for the development of occupant safety systems. By implementing a muscle controller with physiologically inspired control strategies into an open-source extended muscle model, the usability, runtime performance, and physiological accuracy are improved. The proposed controller code is validated with extensive experimental data and shows good agreement with the results.
BIOMECHANICS AND MODELING IN MECHANOBIOLOGY
(2023)
Review
Multidisciplinary Sciences
Sang-Hoon Yeo, Jasper Verheul, Walter Herzog, Shinjiro Sueda
Summary: Despite being introduced almost a century ago, Hill-type muscle models are still highly preferred for musculoskeletal simulation studies. The use of simple Hill-type models, instead of more recent cross-bridge models, is justified due to their computational efficiency and value for large-scale simulations. However, this article aims to discuss the numerical instability issues of Hill-type models in simulation studies, which can lead to computational failures and should not be overlooked or dismissed as a consequence of simplification.
JOURNAL OF THE ROYAL SOCIETY INTERFACE
(2023)
Article
Polymer Science
Dongwon Yun, Jong-Bong Kim
Summary: This study analyzes the hot embossing process of PMMA film using computational analysis method to quickly find the optimal process conditions. The developed constitutive model considers strain, strain rate, temperature-dependent stress and softening of the flexible film, accurately describing the behavior of PMMA materials. The proposed method allows for a precise analysis of the film change phenomenon during the hot embossing process.
Article
Polymer Science
Sharlin Shahid, Eskil Andreasson, Viktor Petersson, Widaad Gukhool, Yuchi Kang, Sharon Kao-Walter
Summary: Injection-molded polyethylene plates exhibit highly anisotropic mechanical behavior. This article studies three different anisotropic yield criteria and compares their accuracy and computation time in finite element modeling. It is concluded that Barlat Yld91 and Barlat Yld2004-18P yield criteria can be calibrated with a few tensile tests and still capture anisotropy in deformation-stress-strain.
Article
Construction & Building Technology
Anna-Leena Erkkila, Teemu Leppanen, Jussi Virkajarvi, Joni Parkkonen, Leena Turunen, Tero Tuovinen
Summary: The study investigated the impact of porosity on the compressive strength of quasi-brittle materials through simulations. A new simple model was developed based on the linear relationship between the cubic root of air void fraction (porosity) and the simulated compressive strength, providing insights into the compressional behavior of low porosity materials.
CEMENT AND CONCRETE RESEARCH
(2021)
Article
Engineering, Biomedical
Jessica Abreu, Douglas C. Crowder, Robert F. Kirsch
Summary: Functional electrical stimulation (FES) can help paralyzed individuals with spinal cord injuries (SCIs) regain movement. Deep neural networks (DNNs) trained with reinforcement learning (RL) have been investigated as a potential method for controlling FES systems to restore upper-limb movements. However, previous studies have shown that large asymmetries in muscle strength can affect the performance of RL controllers. This study explored the underlying causes of this performance decrease and proposed rehabilitation protocols to improve controller performance.
IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING
(2023)
Article
Biophysics
Katherine R. Knaus, Geoffrey G. Handsfield, Silvia S. Blemker
Summary: The study established an image-based finite element model representing the 3D structure of the soleus muscle and its aponeurosis connective tissue, predicting tissue displacements and fascicle architecture changes. The model's initial architecture and changes during passive lengthening were consistent with in vivo data. Model predictions indicated muscle displacements during active lengthening, with average fascicle strains similar between compartments. Further simulations showed how aponeurosis material properties influenced fascicle architecture changes.
JOURNAL OF BIOMECHANICS
(2022)
Article
Engineering, Aerospace
Xiaokun Liu, Lixun Cai, Hui Chen
Summary: A novel residual stress indentation model is proposed in this study to describe the relationship between residual stress, material constitutive parameters, load, and displacement for materials with a uniaxial constitutive relationship obeying Hollomon's power law. The model was validated through finite element analysis and indentation tests.
CHINESE JOURNAL OF AERONAUTICS
(2022)
Article
Chemistry, Physical
Nejc Dvorsek, Iztok Stopeinig, Simon Klancnik
Summary: The main objective of this study is to develop a genetic algorithm (GA) for optimizing material model parameters based on 12 experiments. The GA uses a similarity measure algorithm to compare experimental and simulation data and minimize the objective function. The performance of the GA is evaluated with different parameters, and it shows improvement compared to the classic trial and error approach.
Article
Biotechnology & Applied Microbiology
Wei Zeng, Donald R. Hume, Yongtao Lu, Clare K. Fitzpatrick, Colton Babcock, Casey A. Myers, Paul J. Rullkoetter, Kevin B. Shelburne
Summary: This paper presents a framework for modeling 3D deformable muscles to improve musculoskeletal predictions. The framework includes continuum constitutive representation, parametric determination, model validation, fiber distribution estimation, and integration of multiple muscles for joint motion simulation. The study shows the effectiveness and stability of the presented modeling pipeline for simulating complex muscle behavior.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Tao Zhou, Lin He, Zhiguo Feng, Pengfei Tian, Feilong Du, Zichuan Zou, Xiaorong Zhou
Summary: This paper proposes a reverse identification method of material constitutive parameters based on co-simulation. It analyzes the influence of factors such as mass scaling factor, mesh size, and Johnson-Cook (J-C) constitutive parameters on cutting force, and carries out orthogonal cutting experiments for difficult-to-machine materials. By combining genetic algorithm, the J-C constitutive parameters are directly optimized based on the minimum error between the finite element simulation value and the experimental value of the cutting force. The results show that the reasonable setting of mass scaling factor and mesh size can significantly improve the optimization efficiency of constitutive parameters.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Wenjia Huang, Ninshu Ma, Yunwu Ma, Toshiro Amaishi, Kenji Takada, Takayuki Hama
Summary: A new material model of magnesium alloys, combining Hill'48 yield function and Cazacu'06 yield function, was developed and verified using LS-DYNA. This model accurately predicted the deformation characteristics of magnesium alloy parts and explored the effects of factors such as thickness distribution and contact friction coefficient on deformation behaviors in simulation models.
Article
Neurosciences
Jongwoo Lim, Woonhoe Goo, Dae Woong Kang, Seung Ha Oh, Namkeun Kim
Summary: The effect of Young's modulus of the closing material on hearing level was investigated using a 3D finite element model of the human head. It was found that a more compliant closing material improved the hearing level after stapedotomy, while the relationship between Young's modulus and hearing level was non-linear in stapedectomy. The study indicates that the choice of closing material is important for hearing rehabilitation in otosclerosis surgeries.
FRONTIERS IN NEUROSCIENCE
(2023)
Article
Instruments & Instrumentation
Shuai Cong, Sau-Lon James Hu, Hua-Jun Li
Summary: In this study, a pole-zero finite element model updating method is proposed to determine complex material parameters of piezoceramic plates. By extracting poles and zeros from measured impedance functions and updating the parameters based on sensitivity, the method demonstrates excellent performance in both computer simulations and laboratory experiments.
SMART MATERIALS AND STRUCTURES
(2022)
Article
Engineering, Biomedical
Jinping Dong, Jingwen Zhao, Xinyi Liu, Wei-Ning Lee
Summary: The proposed method of ultrasound shear wave elastography, along with finite-element simulations and 3D-printed hydrogel phantoms, has been validated for nondestructive assessment of material properties of skeletal muscle and has the potential to uncover microstructural characteristics.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Biophysics
Jonas Osth, Karin Brolin, Mats Y. Svensson, Astrid Linder
JOURNAL OF BIOMECHANICAL ENGINEERING-TRANSACTIONS OF THE ASME
(2016)
Article
Biophysics
Jonas Osth, Manuel Mendoza-Vazquez, Fusako Sato, Mats Y. Svensson, Astrid Linder, Karin Brolin
JOURNAL OF BIOMECHANICS
(2017)
Article
Multidisciplinary Sciences
Laure-Lise Gras, Isabelle Stockman, Karin Brolin
Article
Biophysics
Hosein Naseri, Hakan Johansson, Karin Brolin
JOURNAL OF BIOMECHANICAL ENGINEERING-TRANSACTIONS OF THE ASME
(2018)
Article
Public, Environmental & Occupational Health
Jona Marin Olafsdottir, Jason B. Fice, Daniel W. H. Mang, Karin Brolin, Johan Davidsson, Jean-Sebastien Blouin, Gunter P. Siegmund
TRAFFIC INJURY PREVENTION
(2018)
Article
Public, Environmental & Occupational Health
Ghazaleh Ghaffari, Karin Brolin, Bengt Pipkorn, Lotta Jakobsson, Johan Davidsson
TRAFFIC INJURY PREVENTION
(2019)
Article
Biophysics
Fusako Sato, Yusuke Miyazaki, Shigehiro Morikawa, Antonio Ferreiro Perez, Sylvia Schick, Kunio Yamazaki, Karin Brolin, Mats Y. Svensson
JOURNAL OF BIOMECHANICAL ENGINEERING-TRANSACTIONS OF THE ASME
(2019)
Article
Engineering, Biomedical
Johan Iraeus, Karin Brolin, Bengt Pipkorn
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2020)
Article
Engineering, Biomedical
Jason B. Fice, Daniel W. H. Mang, Jona M. Olafsdottir, Karin Brolin, Peter A. Cripton, Jean-Sebastien Blouin, Gunter P. Siegmund
Summary: The study found that bracing against the steering wheel before impact only slightly increased neck muscle activity without increasing peak muscle responses during impact. This bracing led to significant changes in torso and head kinematics, coupling the torso more rigidly to the seat without necessarily coupling the head more rigidly to the torso.
ANNALS OF BIOMEDICAL ENGINEERING
(2021)
Article
Engineering, Industrial
Karin Brolin, Daniel Lanner, Peter Halldin
Summary: This study analyzed public data on head injuries in the construction industry from workers' compensation systems in Sweden and Germany from 2014 to 2018. Falls were identified as the most frequent cause of wrTBI.
Article
Biotechnology & Applied Microbiology
Fusako Sato, Yusuke Miyazaki, Shigehiro Morikawa, Antonio Ferreiro Perez, Sylvia Schick, Karin Brolin, Mats Svensson
Summary: Experimental studies have shown a relationship between spinal injury severity and vertebral kinematics, affected by the initial spinal alignment of automotive occupants. Gender differences in spinal injury risk are partially attributed to differences in spinal alignment. The effect of seatback inclination on initial spinal alignment in automotive seating postures differs between men and women, with females tending towards a kyphotic cervical spine and males towards a lordotic cervical spine. The largest influence of seatback inclination was observed in the total thoracic kyphosis, with varying angles based on spinal curvature.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Proceedings Paper
Engineering, Industrial
Fusako Sato, Karin Brolin, Mats Svensson, Astrid Linder
ADVANCES IN ADDITIVE MANUFACTURING, MODELING SYSTEMS AND 3D PROTOTYPING
(2020)
Article
Sport Sciences
Lauren Meredith, Karin Brolin, Robert Ekman, Robert Thomson
TRANSLATIONAL SPORTS MEDICINE
(2019)
Proceedings Paper
Engineering, Multidisciplinary
Karin Brolin, Jacob Wass
ENGINEERING OF SPORT 11
(2016)
Meeting Abstract
Public, Environmental & Occupational Health
Jona Marin Olafsdottir, Jason B. Fice, Daniel W. H. Mang, Karin Brolin, Johan Davidsson, Jean-Sebastien Blouin, Gunter P. Siegmund
TRAFFIC INJURY PREVENTION
(2016)
