关键词: 寝具乳胶泡沫, 应力, 应变, 单轴压缩, 仿真

Abstract: In order to analyze the compression performance of bedding latex foam and establish mathematical models of the deformation, pressure and thickness of the latex foam to facilitate the design of latex products, the finite element method was used to simulate and analyze its compression performance. First, the compressive, shear, and tensile properties of latex foam for bedding are tested, obtaining the stress and strain of three mechanical experiments. Combining the experimental results, three methods of "hyper foam test data, hyper foam model parameter method and low-density foam method" were used to simulate uniaxial compression for bedding latex foam in the finite element software ABAQUS. The simulation results and the experimental values are analyzed by fitting, and the results show that the degree of fit is the highest when the low-density foam method is used for simulation, reaching 98.71%. Therefore, the "low-density foam method" is used for simulation, which is relatively close to the actual compression performance of bedding latex foam. Then deformation simulation research on latex foam micro-element is performed. Through simulation experiment analysis of different thickness and deformation under a certain pressure, and simulation experiment analysis of different pressure and deformation under a certain thickness, the three types of deformation, pressure and thickness of latex foam are obtained. The mathematical model provides help for the subsequent personalized latex product size design. At the same time, as an innovative technology, the numerical simulation research method also provides a more convenient and scientific method for the research and design of textile materials and textile products.

Key words: bedding latex foam, stress, strain, uniaxial compression, simulation