A method to design the insoles for pressure relief based on the plantar pressure distribution characteristics by FEM (Finite Element Method), so as to realize the customized insole service for different individuals. By establishing a composite model of foot bones and soft tissues, human foot simulation was conducted to obtain the plantar pressure distribution data of latex, sponge, TPU and EVA flat insoles respectively; MATLAB was used to binarize the plantar pressure distribution map obtained from the simulation and extract the contour of the plantar pressure concentration area for the design of pressure relieving insoles, and the design of insoles for pressure relieving insoles was carried out according to the different properties of the four materials. The design of the insole combination is based on the different properties of the four materials. The appropriate solution of Insole is proposed by this design process as a prototype so as to achieve an intelligent approach for footwear design.
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