Maxwell粘弹性球体的湿应力  

HYDRO STRESSES IN A MAXWELL VISCOELASTIC SPHERE

作　　者：付志一[1] 华云龙[1] 

机构地区：[1]中国农业大学材料力学教研室

出　　处：《力学与实践》1998年第3期17-19,共3页Mechanics in Engineering

基　　金：国家自然科学基金

摘　　要：谷物烘干时，谷粒内部的热－湿应力太大，可能使谷粒出现裂纹．基于这一实际问题，本文研究了当初始湿度和平衡湿度给定时，Ｍａｘｗｅｌ粘弹性圆球内的湿应力分布，及其随时间的变化情况．Internal cracks in grain kernel may occur due to highlevel of thermo-hydro-stresses during drying. Based on this actual problem,the hydro-stress distributions in a Maxwell viscoelastic sphere are studied wheninitial moisture concentration and equilibrium moisture concentration are given, and the variations of the hydro-stress with the lapse of time are discussedas well in this paper.

关 键 词：粘弹性 圆球 湿应力 湿度 

分 类 号：O345[理学—固体力学]