CORE
CO
nnecting
RE
positories
Services
Services overview
Explore all CORE services
Access to raw data
API
Dataset
FastSync
Content discovery
Recommender
Discovery
OAI identifiers
OAI Resolver
Managing content
Dashboard
Bespoke contracts
Consultancy services
Support us
Support us
Membership
Sponsorship
Research partnership
About
About
About us
Our mission
Team
Blog
FAQs
Contact us
Community governance
Governance
Advisory Board
Board of supporters
Research network
Innovations
Our research
Labs
梯度仿生复合材料的抗冲击性能研究
Authors
许向红
魏志全
Publication date
23 November 2018
Publisher
Abstract
自然界中生物结构的界面总是表现出梯度材料的分布特征,比如牙齿软-硬梯度结构,从而具有比单一材料更好的强度、韧性以及抗冲击性能。本文设计了整体梯度材料和表面梯度材料两种类型的靶板,受到相同速度子弹的冲击,基于靶板背面产生碎片情况、子弹的残余速度、子弹的冲击力以及临界冲击能四个方面以表征靶板的抗冲击性能,并与相同等效杨氏模量的单一材料靶板进行对比。研究结果表明:相比单一材料靶板,整体梯度材料和表面梯度材料靶板的背面均无碎片产生,同时子弹的残余速度均能降为0 m/s;整体梯度材料靶板的临界冲击能提高了86%,但子弹的冲击力有所升高;表面梯度材料设计通过减缓子弹与靶板接触部位的应力集中,使得靶板的临界冲击能可提高168%,同时降低了子弹的冲击力。因此对结构表面进行梯度材料设计可最大程度地提高靶板的抗冲击性能,这为将来设计类似头盔、防弹衣等保护型器具提供了参考
Similar works
Full text
Available Versions
Institute Of Mechanics,Chinese Academy of Sciences
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:dspace.imech.ac.cn:311007/...
Last time updated on 18/12/2019