作　　者： ; ; ; ;

机构地区： 内蒙古农业大学机电工程学院

出　　处： 《农机化研究》 2009年第12期121-124,共4页

摘　　要： 通过对紫花苜蓿进行蠕变试验,研究了在不同的初始密度、含水率和载荷下紫花苜蓿草的蠕变特性,建立了保压阶段紫花苜蓿蠕变模型和本构方程,并对含水率、初始密度、载荷对蠕变特性参数的影响进行了分析研究。研究结果表明,含水率的增加均使E2和η1减小;初始密度的增加使E2增大,η1减小;载荷的增加使E1值逐渐增大。 In this paper,the creep of Alfalfa was studied under different initial density,different moisture content and different loadings.Then the rheological model of creep and constitutive equation were established.And the creep properties influenced by different moisture content,initial density and loadings were also studied experimentally.The results show that the increase in moisture content lead to E2,η1 reduce;The increase in initial density lead to E2 increase,η1 reduce;The increase in load lead to E2 increase, η1 reduce; The increase in load lead to E2 increasing.

关 键 词： 紫花苜蓿 蠕变特性 流变模型

领　　域： [农业科学] [农业科学]