Multibody Dynamics Simulation of Balls Impact-Contact Mechanics in Ball Screw Mechanism

2010 ◽  
Author(s):  
Hongkui Jiang ◽  
Xianchun Song ◽  
Xiangrong Xu ◽  
Wencheng Tang ◽  
Chunling Zhang ◽  
...  
Keyword(s):  
Contact Mechanics ◽  
Multibody Dynamics ◽  
Dynamics Simulation ◽  
Ball Screw ◽  
Screw Mechanism

Musculoskeletal multibody dynamics simulation of the contact mechanics and kinematics of a natural knee joint during a walking cycle

2018 ◽  
Vol 232 (5) ◽  
pp. 508-519 ◽  
Author(s):  
Jiayu Hu ◽  
Zhenxian Chen ◽  
Hua Xin ◽  
Qida Zhang ◽  
Zhongmin Jin
Keyword(s):  
Knee Joint ◽  
Contact Mechanics ◽  
Multibody Dynamics ◽  
Contact Forces ◽  
Dynamics Simulation ◽  
Detailed Knowledge ◽  
Joint Loading ◽  
Dynamics Model ◽  
Articular Cartilages ◽  
Multibody Dynamics Model

Detailed knowledge of the in vivo loading and kinematics in the knee joint is essential to understand its normal functions and the aetiology of osteoarthritis. Computer models provide a viable non-invasive solution for estimating joint loading and kinematics during different physiological activities. However, the joint loading and kinematics of the tibiofemoral and patellofemoral joints during a gait cycle were not typically investigated concurrently in previous computational simulations. In this study, a natural knee architecture was incorporated into a lower extremity musculoskeletal multibody dynamics model based on a force-dependent kinematics approach to investigate the contact mechanics and kinematics of a natural knee joint during a walking cycle. Specifically, the contact forces between the femoral/tibial articular cartilages and menisci and between the femoral and tibial/patellar articular cartilages were quantified. The contact forces and kinematics of the tibiofemoral and patellofemoral joints and the muscle activations and ligament forces were predicted simultaneously with a reasonable level of accuracy. The developed musculoskeletal multibody dynamics model with a natural knee architecture can serve as a potential platform for assisting clinical decision-making and postoperative rehabilitation planning.

Precision loss of ball screw mechanism under sliding-rolling mixed motion behavior

2021 ◽  
Vol 28 (5) ◽  
pp. 1357-1376
Author(s):  
Bao-bao Qi ◽  
Qiang Cheng ◽  
Shun-lei Li ◽  
Zhi-feng Liu ◽  
Cong-bin Yang
Keyword(s):  
Ball Screw ◽  
Screw Mechanism ◽  
Motion Behavior

A geometrically exact active beam theory for multibody dynamics simulation

2007 ◽  
Vol 16 (4) ◽  
pp. 1136-1147 ◽  
Author(s):  
Dong Han ◽  
Wenbin Yu ◽  
Sitikantha Roy
Keyword(s):  
Multibody Dynamics ◽  
Beam Theory ◽  
Dynamics Simulation

History, Perspective and Outlook for Media Transport Simulation Using Multibody Dynamics

2005 ◽  
Author(s):  
Brant A. Ross
Keyword(s):  
Engineering Design ◽  
Multibody Dynamics ◽  
Dynamics Simulation ◽  
Physical Interaction ◽  
Process Automation ◽  
Transport Models ◽  
Transport Simulation ◽  
Physical Testing ◽  
New Generation ◽  
2D And 3D

Media transport models for multibody dynamics simulation are different than the models typically implemented in the automotive and aerospace industries. The physical interaction between heavy, stiff components and light sheets present special challenges for engineering design. Feedback from both physical testing and simulation is needed. The emergence of a new generation of specialized application modules that are based on commercial multibody dynamics software provides engineers with a more approachable tool for simulation. The application of process automation is described. The requirements and benefits of 2D and 3D media transport models are different and are best addressed with separate application modules. Considerations for modeling and simulating a photo-receptor belt are reviewed. The future of media transport simulation is explored.

On Supporting the Learning of Biomechanics Using Multidisciplinary Physical Prototyping

2020 ◽  
Author(s):  
Sebastian Hernandez ◽  
Sofiane Achiche ◽  
Daniel Spooner ◽  
Aurelian Vadean ◽  
Maxime Raison
Keyword(s):  
Multibody Dynamics ◽  
Human Body ◽  
Teaching Methods ◽  
Pilot Project ◽  
The Body ◽  
Dynamics Simulation ◽  
Engineering Curriculum ◽  
Dynamic Interactions ◽  
Multibody Modeling ◽  
3D Printed

Abstract Over the last decades, the use of multibody dynamics in biomechanics research has grown considerably and holds significant promises for the health and biomedical industries. Nowadays, it allows estimating internal data of the body that would be impractical or impossible to obtain experimentally, e.g. individual muscle forces. Also, multibody dynamics simulation allows one to constrain virtually any apparatus to the musculoskeletal system, helping to understand and improve the patient’s dynamic interactions with the device. The modeling and validation of human multibody models remain a tedious task to achieve for the research community and can vary significantly depending on the applications. Despite the advantages offered by the multibody modeling of the human body, its introduction in the biomedical engineering curriculum is not widespread. The present paper aims to evaluate the feasibility and the interest of introducing multibody modeling into multidisciplinary, real-world projects using 3D printed prototypes to add an experimental understanding of the difficulties and validation of the human body modeling. The proposed methodology is based on a literature review of the multibody dynamics teaching methods used in mechanical engineering, followed by a first pilot project and feedback from students and professors of the community through interviews. Finally, a project is proposed, using physical prototyping to support the learning.

A Jupyter Notebook Environment for Multibody Dynamics

2020 ◽  
Author(s):  
Aaron Gaut ◽  
Jonathan Cameron ◽  
Abhinandan Jain
Keyword(s):  
Modeling And Simulation ◽  
Multibody Dynamics ◽  
Flexible Multibody Dynamics ◽  
Training Needs ◽  
Simulation Software ◽  
Dynamics Simulation ◽  
Engineering Applications ◽  
Topic Area ◽  
Significant Extension ◽  
On Line

Abstract DARTS is a rigid/flexible multibody dynamics toolkit for the modeling and simulation of aerospace and robotic vehicles for engineering applications. In this paper we describe an on-line, browser-based environment using Jupyter notebooks to support training needs for the DARTS software. The suite of curated tutorial notebooks is organized into different topic areas, and into multiple themes within each topic area. The notebooks within a theme use a progression of examples for users to expand their understanding of the software. The topic areas include one on the DARTS multibody dynamics software and another one on the theory underlying the multibody dynamics formulation. We also describe a number of Jupyter extensions that were used — and some developed in house — to enhance the notebook interface for use with the dynamics simulation software. One significant extension we implemented allows the embedding of live 3D visualizations within simulation notebooks.

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