| The purpose of research is to establish a theoretical framework of integrated CAD system for clothing biomechanical engineering design by developing computer simulation and visualization platform. A mathematical model and visualization environment have been developed to simulate the dynamic mechanical interactions between clothing and human body during wear to reveal skin pressure distributions and distributions of stresses and strains in human body, as well as their impact to human psychological sensory perceptions. The CAD system is applied to establish scientific principles and framework for biomechanical engineering of biofunctional textile products to meet the requirements of biomedical and healthcare applications.; Clothing biomechanical engineering design is a complex iterative-decision-making process. To increase efficiency in this complex process, an integration CAD system has been developed to provide an integrated environment from functional specification, data management, biomechanical computational simulation, design visualization and evaluation. To evaluate the pressure comfort performance of the design, a computational model has been developed to predict the mechanical sensory perception from skin pressure distributions, internal deformations, stresses and strains that are induced by the dynamic mechanical interactions between clothing and human body. To support designers and engineers to evaluate the biomechanical functional performances and sensory comfort of their design, visualization interfaces have been developed, which can not only present the quantitative data in scientific format, but also can transform the quantitative data to 3D color images to visually illustrate skin pressure distributions, deformations, stress and strain distributions in internal structure of the body, also create 3D color map to visualize the pressure sensory perceptions at different parts of the body.; This integrated CAD system provides a technology platform for design and engineering of textiles and apparel products on the basis of scientific data with effective visual illustrations. |
