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首页> 外文会议>International Conference on Port and Ocean Engineering under Arctic Conditions(POAC'05) vol.1; 20050626-3002; Potsdam,NY(US) >SIZE EFFECT BASED ON A DECOHESIVE CRACK SOLUTION FOR THE COMPACT TENSION SPECIMEN USING BEAM THEORY
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SIZE EFFECT BASED ON A DECOHESIVE CRACK SOLUTION FOR THE COMPACT TENSION SPECIMEN USING BEAM THEORY

机译：基于梁理论的紧凑张力试样基于裂纹裂纹解的尺寸效应

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摘要

An analytical solution is obtained for the compact tension specimen modeled as a double-cantilevered beam with a linearly softening relation for the discontinuity. It is assumed that cracking does not occur until a critical value of traction is reached rather than assuming that failure initiates immediately. The consequence is that the solution must be separated into phases with continuity conditions invoked to transition from one phase to the next. The advantage of an analytical solution is that dimensionless variables are defined naturally as part of the analysis. Critical cases are identified and one can see immediately what size the structure must be in order for traditional scaling relationships to hold. In particular, it is shown that for short specimens, there is a significant reduction in maximum force from the conventional scaling relation that involves the square root of a size parameter. This reduction is obtained without the assumption that material parameters depend on specimen size.
机译：对于以双悬臂梁为模型的紧凑拉伸试样，获得了具有不连续性线性软化关系的解析解。假定直到达到牵引力的临界值时才发生开裂，而不是假定破坏立即开始。结果是必须将解决方案分为多个阶段，并调用连续性条件以从一个阶段过渡到下一阶段。分析解决方案的优势在于，无量纲变量自然是分析的一部分。识别出关键情况，人们可以立即看到结构必须具有多大的尺寸才能保持传统的缩放关系。特别地，表明对于短样本，与涉及尺寸参数的平方根的常规比例关系相比，最大力显着减小。在不假设材料参数取决于样品尺寸的情况下获得了这种减少。

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