Dynamic properties of iron and a variety of steels over a wide range of strain rates

铁和各种钢在各种应变率下的动态特性

• 批准号: 15360061
• 负责人: TANIMURA Shinji
• 金额: $ 4.86万
• 依托单位: Aichi University of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15360061/
• 关键词: Stress-strain curve; Strain rate; Dynamic property; Steel; Automobile; Constitutive model; Fracture strain; Fracture strength; 鉄系; 動的有限要素コード; 自動車; 材料; 動的強度; ひずみ速度; 衝突; 構成式

The tensile stress-strain curves of iron and a variety of steels, covering a wide range of strength level, which compose a material group of ferrous metals, over a wide strain rate range on the order of 10^<-3>〜10^3 s^<-1>, were obtained systematically by using the Sensing Block Type High Speed Material Testing System (SBTS, Saginomiya). The tested materials are an electrolytic pure iron (LW1), an ulutra-low carbon interstitial-free miled steel (SPCE ; 270 MPa grade IF steel), a cold rolled pure iron (PF), a cold rolled mild steel (SPCE), a cold-reduced carbon steel (SPCC), cold rolled high strength steels (SPFC440 and SPFC590), DP590, a 1200 MPa grade martensitic type high strength steel (MT), and a 1500 MPa grade martensitic type high strength steel (M1500). Through intensive analysis of these results obtained systematically, the strain rate sensitivity of the flow stress for the large strain region, including the viscous term at high strain rates, the true fracture strength and the trure fracture strain of iron and steels, over the wide range of strain rates, were cleared for the material group of the ferrous metals. New unified sets of values of parameters of the modified constitutive model (Tanimura-Mimura Yield Model) were obtained. One set can be used for homogenous deformation and the other can be used for a wide strain range extended to the true fracture strain. Both of the sets can be used to simulate the stress-strain curves of any material belonging to the material group of ferrous metals, over a wide strain rate range, as long as the quasistatic tensile stress-strain curves of the material concerned is known in advance.

利用传感块型高速材料测试系统（SBTS，鹭宫）系统地获得了铁和各种钢的拉伸应力-应变曲线，覆盖了广泛的强度水平，组成了黑色金属材料组，在10^<-3>〜10^3 s^<-1>的较宽应变率范围内。测试材料为电解纯铁（LW1）、超低碳无间隙原子铣削钢（SPCE；270 MPa级IF钢）、冷轧纯铁（PF）、冷轧低碳钢（SPCE）、冷还原碳钢（SPCC）、冷轧高强度钢（SPFC440和SPFC590）、DP590、1200 MPa 级马氏体型高强度钢（MT）和1500MPa级马氏体型高强度钢（M1500）。通过对系统获得的这些结果进行深入分析，对于黑色金属材料组，明确了大应变区域流变应力的应变率敏感性，包括高应变率下的粘性项、钢铁在宽应变率范围内的真实断裂强度和真实断裂应变。获得了修改后的本构模型（Tanimura-Mimura 屈服模型）的新的统一参数值集。一组可用于均匀变形，另一组可用于扩展至真实断裂应变的宽应变范围。只要事先已知相关材料的准静态拉伸应力-应变曲线，这两个集合都可以用于在较宽的应变率范围内模拟属于黑色金属材料组的任何材料的应力-应变曲线。

项目成果

動的引張試験に適した試験方形状・寸法の検討

考虑适合动态拉伸测试的测试矩形形状和尺寸

• 发表时间: 2004
• 期刊: 日本機械学会論文集A編 70巻690号
• 作者: J.Geelen;S.Iwata;K.Murota;Shusaku Takagi;Shinji Tanimura;Shusaku Takagi;Shusuke Takagi;Kaishin Liu;Shinji Tanimura;Shinji Tanimura;北田明夫
• 通讯作者: 北田明夫

Application of Discrete Element Method in Impact Problems

• DOI: 10.1299/jsmea.47.138
• 发表时间: 2004-04
• 期刊: Jsme International Journal Series A-solid Mechanics and Material Engineering
• 作者: Kaishin Liu;Lin Gao;S. Tanimura

Stress-Strain Curves at High Strength Steel Sheets at Strain Rates from 10^<-3> to 10^3 s^<-1> Obtained with Various Types of Tensile Testing Machines

各种拉伸试验机获得的高强度钢板在应变率10^<-3>至10^3s^<-1>下的应力应变曲线

• 发表时间: 2005
• 期刊: SAE Technical Paper Series 2005-01-0494
• 作者: J.Geelen;S.Iwata;K.Murota;Shusaku Takagi;Shinji Tanimura;Shusaku Takagi
• 通讯作者: Shusaku Takagi

Dynamic Tensile Properties of Steel Sheets for Automobiles

汽车钢板的动态拉伸性能

• 发表时间: 2004
• 期刊: Material Science Forum(Published by Trans Tech Publication Ltd.Switzerland Vols.465-466
• 作者: Shinji Tanimura;他
• 通讯作者: 他

Dynamic Testing Properties of Steel Sheets for Automobiles

汽车钢板动态测试性能

• 发表时间: 2004
• 期刊: Materials Science Forum Vols. 465-466
• 作者: J.Geelen;S.Iwata;K.Murota;Shusaku Takagi;Shinji Tanimura;Shusaku Takagi;Shusuke Takagi;Kaishin Liu;Shinji Tanimura;Shinji Tanimura
• 通讯作者: Shinji Tanimura