钛合金J-C动态本构参数高精度分析及抗弹性能研究  

High-Precision Analysis of J-C Dynamic Constitutive Parameters of Ti Alloy and Its Ballistic Performance

作　　者：郝芳 赵平洛[2] 毛友川 张帆 陈海生 杜予晅[3] 王凯旋[3] 刘向宏[3] 冯勇[1,3] Hao Fang;Zhao Pingluo;Mao Youchuan;Zhang Fan;Cheng Haisheng;Du Yuxuan;Wang Kaixuan;Liu Xianghong;Feng Yong(Northwestern Polytechnical University,Xi’an 710012,China;School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100083,China;Western Superconducting Technologies Co.,Ltd,Xi’an 710018,China;School of Civil Engineering and Architecture,Xi’an University of Technology,Xi’an 710048,China)

机构地区：[1]西北工业大学,陕西西安710012 [2]北京理工大学材料科学与工程学院,北京100083 [3]西部超导材料科技股份有限公司,陕西西安710018 [4]西安理工大学土木建筑工程学院,陕西西安710048

出　　处：《稀有金属材料与工程》2021年第12期4348-4356,共9页Rare Metal Materials and Engineering

摘　　要：利用"材料J-C本构参数及损伤模型参数测定系统"软件,通过聚类全局优化(CGO)法获得一种近α型钛合金材料的J-C动态本构参数,规避了传统测定方法计算量大、方法复杂,且无法体现参数关联性等缺点,通过钛合金靶板的抗弹性能测试,利用J-C本构参数,采用商业动力学计算软件AUTODYN对枪击试验完成了模拟,模拟的各项结果与试验数据吻合度高,验证了J-C动态参数的准确度和精确性;弹孔显微组织分析表明,在裂纹的末端可以观察到绝热剪切带,证明裂纹的萌生是由绝热剪切带引起,表明高速冲击动态环境下的失效模式主要为绝热剪切。Using the software“J-C constitutive parameter and damage model parameter measurement system of materials”,J-C dynamic constitutive parameters of a nearαTi alloy was obtained by clustering global optimization(CGO)method,which avoids the large amount of calculation and complexity of traditional measurement methods and shortcoming of not being able to capture parameter relevance.Through the anti-elasticity test of the titanium alloy target plate,using the J-C constitutive parameters,the commercial dynamics calculation software AUTODYN was used to complete the simulation of the shooting test.The simulation results are in good agreement with the test data,which verifies accuracy and precision of the J-C dynamic parameters.Bullet hole microstructure analysis show that adiabatic shear bands can be observed at the ends of the cracks,which proves that the initiation of cracks is caused by adiabatic shear bands,indicating that the failure mode under the high-speed impact dynamic environment is mainly adiabatic shear.

关 键 词：钛合金 聚类全局优化方法 J-C动态本构参数 抗弹性能 

分 类 号：TG146.23[一般工业技术—材料科学与工程]