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在持续负荷下与砂接触的土壤的构成关系

Fengfeng Wang¹, Lei Li²

¹School of Mechanical and Electrical Engineering, Jinling Institute of Technology, Nanjing, 211169, China. wangfengfengxcd@163.com.

Scientific reports

|October 6, 2024

概括

这项研究在持续的迫击炮火下模拟了土壤紧缩,开发了土壤接触的新构成关系. 这项研究提高了迫击炮系统的动态建模精度,以改进工程设计.

科学领域:

地质技术工程地质技术工程
军事工程的军事工程.
计算力学计算力学计算力学

背景情况:

迫击炮在陆战中至关重要,但持续射击会导致土壤紧缩,影响性能.
了解非线性土壤接触构成关系对于先进的砂设计至关重要.
现有的模型与土壤 - 砂相互作用的不连续和非线性性质作斗争.

研究的目的:

通过确定连续负荷下接触土壤的构成关系,开发一个准确的砂系统动态模型.
为分析持续的砂作业期间的土壤紧缩现象提供强大的方法.
通过改进动态建模,提高迫击炮系统的工程设计.

主要方法:

使用非线性弹性-塑性理论和循环负荷应力-张力关系的理论分析.
试验模拟迫击炮发射负载以捕捉土壤应力应变反应.
最小方程方法来确定在压缩过程中土壤应力-应变关系.
ABAQUS VUMAT子程序用于创建接触土壤的构成关系模型.

主要成果:

提出了一种新的理论方法,用于连续负荷下接触土壤的构成关系.
实验数据提供了关于在重复冲击负载下土壤应力应变反应的见解.
成功建立和验证了接触土壤的构成关系模型.
开发的模型显著提高了动态建模迫击炮系统的准确性.

结论:

拟议的方法准确地模拟了土壤在连续燃烧期间与砂接触的构成关系.
这项研究为工程设计和迫击炮系统的优化提供了实际价值.
准确的动态建模砂系统通过了解土壤接触构成性行为来增强.

关键词:

构成关系是构成关系.连续加载不断加载实验实验实验实验砂基板是一种基本板.土壤土壤土壤.

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