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New Strain Gradient Theory and Analysis
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  • 分类：TU452[建筑科学—岩土工程;建筑科学—土工工程] TU45[建筑科学—岩土工程;建筑科学—土工工程]
  • 作者机构：[1]LNM, institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China
  • 相关基金：Project supported by the National Natural Science Foundation of China （Nos. 10672165 and 10732050） and KJCX2- YW-M04.
  • 相关项目：材料强度及灾变的跨尺度力学研究
关键词： 应变梯度理论, 非局部模型, 尺寸效应, 多晶铜, 梁弯曲, 能源, 应用, 基础, non-local model, micro-indentation, strain gradient theory, size effect
中文摘要：

基于精力的一个新种类坡度理论非局部的模型在这篇论文被建议，并且理论被使用在薄金属性的电线扭转调查尺寸效果，极端薄的横梁弯曲并且多晶的铜微缩进。首先，一个精力非局部的模型被建议。基于模型，第二，一个新种类坡度理论被导出。第三，新理论被使用分析三个代表性的实验。

英文摘要：

A new strain gradient theory which is based on energy nonlocal model is proposed in this paper, and the theory is applied to investigate the size effects in thin metallic wire torsion, ultra-thin beam bending and micro-indentation of polycrystalline copper. First, an energy nonlocal model is suggested. Second, based on the model, a new strain gradient theory is derived. Third, the new theory is applied to analyze three representative experiments.

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