Through the study of the injection mould for the plasticconduit, the problems on design of multi_cavity injection moulds for deep_cavity plastic parts were solved.
Based on the theory of elastic-plastic deformation, according to the finite element method, this paper presents a nonlinear analysis of the distribution of the soil pressure of the ditch conduit.
表明对大型沟埋式管道的上压力,采用弹塑性理论的非线性分析是比较符合实际的,其结果可供设计参考。
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Methods: With some simple materials such as silica gel conduit, non-returnable infusion-tube, foamed plastic board bored etc. Some the NNB thoroughfares are formed respectively.