对于背面变形和防护设计的有限元模型的使用:系统性审查
Abd Alhamid R Sarhan1, Melanie Franklyn2, Peter V S Lee1
1Department of Biomedical Engineering, University of Melbourne, Melbourne, VIC, Australia.
Computer methods in biomechanics and biomedical engineering
|November 14, 2023
概括
有限元 (FE) 模型对理解身体装甲伤 (BABT) 有希望. 将这些FE模型与现实世界士兵伤害数据的验证对于改善防护甲设计和保护至关重要.
科学领域:
- 生物力学 生物力学
- 材料科学 材料科学 材料科学
- 创伤研究 创伤研究
背景情况:
- 甲背面变形 (BFD) 可以造成严重的创伤,但在军事登记册中,伤害报告不足.
- 诸如弹子类型,冲击速度和盔甲特征等因素会影响伤害严重程度.
- 目前弹道测试的限制需要先进的评估方法,如有限元素 (FE) 分析.
研究的目的:
- 系统地审查和总结FE模型的文献,用于调查防护甲BFD和防护甲后面的突击创伤 (BABT).
- 评估FE模型在模拟弹道撞击和重创伤方面的开发和应用.
- 确定共同的局限性,并提出FE模型验证的未来研究方向.
主要方法:
- 按照系统性审查和元分析 (PRISMA) 准则的首选报告项目进行了系统性文献审查.
- 在多个数据库中进行了搜索 (EBSCOhost,谷歌学者,ProQuest,Scopus等). 使用与BFD,BABT和FE分析相关的全面关键词.
- 包括各种类型的出版物:同行评审的文章,评论,报告,会议论文和论文.
主要成果:
- FE分析显示了模拟形冲击场景和理解BABT机制的潜力.
- 研究的模型包括弹子,保护媒介和人体干的表现.
- 研究中的一个重大局限性是 FE 模型预测缺乏实验验证.
结论:
- FE模型为分析非穿透弹道冲击及其对人体干的影响提供了有价值的工具.
- 对FE模型预测与士兵实际创伤数据的相关性对于验证至关重要.
- 验证FE模型将提高它们在优化防护设计和开发伤害缓解策略方面的实用性.
相关概念视频
Deformation of Member under Multiple Loadings
168
When a rod is made of different materials or has various cross-sections, it must be divided into parts that meet the necessary conditions for determining the deformation. These parts are each characterized by their internal force, cross-sectional area, length, and modulus of elasticity. These parameters are then used to compute the deformation of the entire rod.
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
168
Temperature Dependent Deformation
150
In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...
150
Design Consideration
192
Designing a structure involves a series of considerations, primarily the material's ultimate strength, calculated through tests that measure changes under increased force until the material reaches its breaking point or limit. The ultimate load, where the material breaks, is divided by its original cross-sectional area, resulting in the ultimate normal stress or strength. The ultimate shearing stress is another significant factor taken into account.
The factor of safety is another key...
The factor of safety is another key...
192


