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R.S.Sandhu and E.L.Wilson presented“Finite Element Analysis ofSeepage in Elastic Media”,by which complex problems in engineeringcan be solved.In this paper,it is extended to the case of viscoe-lastic media.If the soil skeleton is regarded as viscoelastic media,the stress-strain relation will be changed with time.which increasesthe complexity of problems.By making use of the finite-element methodto solve such problems.the linear stress-strain increment relation isconsidered in every preselective interval of time.The linear propor-tional constant here is called“equivalent elastic tensor”.On thebasis of the equivalent elastic tensor.this paper deduces the formu-lation for solving problems in viscoelastic media. 相似文献
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R.S.Sandhu和E.L.Wilson提出了弹性介质中渗流分析的有限元法[1],可以用来分析较复杂的工程问题,本文将此方法推广到粘-弹性介质情况.当土骨架是粘-弹性介质时,应力与应变的关系随时间变化,增加了问题的复杂性.本文提出了折算弹性张量的概念,即当有限元法计算中的时间间隔Δt预先给定时,在此间隔内应力增量和应变增量可以近似表示为线性关系.这些线性比例常数将称为折算弹性张量.Sandhu和Wilson方法仅能用于弹性介质情况,根据折算张量概念,本文方法适用范围推广到粘-弹性介质情况. 相似文献
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