简介了国内外生物力学的发展动向,初步阐述了生物软组织和固体力学的关系。针对生物软组织的变形,研究了生物软组织的力学特点:既是材料的非线性,又是几何的非线性问题。给出了静脉和肺泡壁计算的拉普拉斯方程。引入模拟应变能密度函数,指出了动脉及左心室的应力解析步骤。为生理、解剖、医疗提供了科学依据。 The development trend of biomechanics at home and abroad is briefly introduced, and the relationship between biological soft tissue and solid mechanics is preliminarily expounded. According to the deformation of biological soft tissue, the mechanical characteristics of biological soft tissue are studied: it is not only the nonlinearity of material but also the geometric nonlinearity. The Laplace equation for the calculation of veins and alveolar walls is given. The simulated strain energy density function is introduced, and the stress analysis steps of the artery and the left ventricle are pointed out. For the physiological, anatomical, medical provides a scientific basis.