摘要超高性能水泥基防护工程材料的力学性能十分优越。减小孔隙率、优化孔结构、提高密实度、掺入纤维是超高性能水泥基复合材料(UHPCC)制备的基本原理和主要方法。本试验主要针对于纤维增强UHPCC的静态力学性能进行了深入的分析,得到的结论是,添加PVA、玻璃纤维和钢纤维均使UHPCC性能提高,但只有钢纤维从根本上优化了UHPCC的性能。只有在添加钢纤维的基础上,才可以对UHPCC防护工程材料的性能优化进行讨论。此外,还进行了基于非线性有限元数值模拟,利用LS-DYNA软件执行。数值模拟的结果与实验数据有很好的一致性,可进一步研究。87809
毕业论文关键词 超高性能水泥基复合材料 LS-DYNA 数值模拟
毕业设计说明书外文摘要
Title The preparation and research of ultra high performance cement-based protective engineering materials
Abstract The mechanical properties of ultra high performance cement-based protective engineering materials is very superior。 Decrease porosity, optimization of pore structure, improve the compactness, incorporating fiber is ultra high performance cement-based composites (UHPCC) preparation of the basic principle and main methods。 This experiment mainly focuses on the static mechanics property of the fiber reinforced UHPCC carried on the thorough analysis, the conclusion is that adding PVA, glass fiber and steel fiber were made UHPCC increase performance, but only the steel fiber to optimize the performance of UHPCC fundamentally。 Only on the basis of adding steel fiber, can the performance optimization of UHPCC protective engineering material are discussed。 In addition, also carried out based on nonlinear finite element numerical simulation, using ls-dyna software is carried out。 Numerical simulation results have good consistency with the experimental data, can be further study。
Keywords UHPC LS-DYNA numerical simulation
目 次
1 绪论 1
1。1 引言 1
1。2 超高性能水泥基防护工程材料概述 1
1。3 纤维增强水泥基复合材料 2
1。4 子弹侵彻混凝土过程的数值模拟 3
1。5 主要研究内容 3
2 试验方法 5
2。1 原材料 5
2。2 仪器与设备 5
2。3 UHPCC试样制备 8
2。4 力学性能试验 11源-于,优Y尔E论W文.网wwW.yOueRw.com 原文+QQ752018`766
3 试验结果和分析 13
3。1 UHPCC基体试样 13
3。2 掺入PVA纤维的UHPCC试样 14
3。3 掺入玻璃纤维的UHPCC试样 15
3。4 掺入钢纤维的UHPCC试样 17
3。5 不同组的试样之间强度比较 18
3。6 本章小结 19
4 数值模拟实验设计 20
4。1 数值模拟技术 20
4。2 超高性能水泥基防护工程材料抗侵彻的有限元模型 20