Study on Static Biomechanical Model of Whole Body Based on Virtual Human

Area of Science:

• Ergonomics
• Biomechanics
• Occupational Safety

Background:

• Material handling tasks pose significant risks for skeletal injuries in workers.
• Virtual human models are essential for analyzing human factors in lifting processes.

Purpose of the Study:

• To develop and validate a whole-body static biomechanical model for virtual human ergonomics analysis.
• To investigate the influence of working posture on biomechanical loads during lifting tasks.

Main Methods:

• Construction of a whole-body static biomechanical model to calculate joint forces, moments, and hand loads.
• Development of a prototype model test system integrated with an inertial motion capture system.
• Design of reliability verification and application simulation experiments.

Main Results:

• The developed model demonstrated consistency with industrial ergonomic software, confirming its reliability.
• Simulation results indicated a strong correlation between working posture and maximum joint/hand loads.
• Forearm and upper arm extension significantly reduced hand load capacity, while leg posture had less impact.

Conclusions:

• Optimizing working posture is crucial for adapting to loads and minimizing biomechanical stress.
• The validated model serves as a reliable tool for virtual human ergonomics analysis in material handling.
• Understanding biomechanical load determinants aids in designing safer work practices and preventing injuries.