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The failure of structure by incidental impact load and the design method of structure under impact

偶然冲击荷载引起的结构破坏及冲击下结构的设计方法

基本信息

批准号：
15560403
负责人：
MASUYA Hiroshi
金额：
$ 2.3万
依托单位：
Kanazawa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15560403/
关键词：
Impact Concrete structure Failure Performance design Shock absorbing material Rock shed

项目摘要

In this research, a series of research on the application of the numerical simulation to the impulse kill of a structural material by the clarification of a hard impulse kill of the material and the impulse kill of a soft material and the individual element methods, etc. was done. The outline is brought together as follows.1.Failure of member by hard impactWe achieved static experiments of various concrete members to compare with impact behaviors before achievement of the failure experiments by hard impact failure mode. Energy required for failure from the load displacement relations of static experiment under various concrete members were examined in detail. Afterwards, a destruction form, penetration energy, crack area, and structural impact behavior etc. were examined using a heavy weight with an impact experiment device and the basic data for the evaluation type examination of the coming flying thing of the RC structure was presented.2.Failure of member by soft impactWe carried out series of static and relatively soft impact tests utilizing shock-absorbing materials (sand and r rubber.) on the collision point between concrete member and weight. Characteristics of these failures and shock absorbing ability have bee made clear. Moreover, the method of evaluating the impact failure of a concrete material comparing with a hard impact was examined.3.Application of distinct element method to the numerical simulation of impact failureWe applied distinct element method to failure of concrete structure that is effective for analysis of discontinuous body like the grainy bodies. We also developed it perforation of concrete plate. Method using cylinder element was concretely shown for two dimensions problem, and an analytical method on which three dimension elements depended was also developed. It has been shown that it is very effective to not only the elasticity problem but also the plasticity impact problem for the plate structure.

在本研究中，通过澄清材料的硬冲击击杀和软冲击击杀以及单个单元法等，对数值模拟在结构材料冲击击杀中的应用进行了一系列的研究。提纲整理如下。构件硬冲击破坏我们对各种混凝土构件进行了静力试验，比较了硬冲击破坏模式完成破坏试验前的冲击行为。从各种混凝土构件静力试验的荷载位移关系出发，详细考察了破坏所需能量。在此基础上，利用冲击试验装置对钢筋混凝土结构的破坏形式、侵彻能、裂纹面积、结构冲击性能等进行了测试，为钢筋混凝土结构来飞物的评定型式测试提供了基础数据。构件的软冲击破坏我们利用减震材料（砂和橡胶）对混凝土构件与重物之间的碰撞点进行了一系列静态和相对软冲击试验。明确了这些失效的特点和减震能力。研究了混凝土材料冲击破坏与硬冲击破坏的对比评价方法。离散元法在冲击破坏数值模拟中的应用本文将离散元法应用于混凝土结构的破坏分析，该方法对颗粒状结构等非连续体的分析是有效的。我们还开发了混凝土板的穿孔。具体介绍了二维问题的柱面单元求解方法，并提出了三维单元所依赖的解析方法。结果表明，该方法不仅对板结构的弹性问题有效，而且对板结构的塑性冲击问题也很有效。

项目成果

期刊论文数量（19）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

A study on the analysis of reinforced concrete beams under impact by distinct element method

钢筋混凝土梁受冲击分析的离散元法研究

DOI：
发表时间：
2004
期刊：
Proceedings of the conference on computational engineering and science Vol.9, No.1
影响因子：
0
作者：
H.Masuya;M.Yamamoto;Y.Nakamura
通讯作者：
Y.Nakamura

有限要素法(ADINA)によるRCはり衝撃挙動解析に関する研究

基于有限元法（ADINA）的RC梁冲击行为分析研究