Al/SiC-SiC互锁结构钎焊接头有限元弯曲应力模拟
TG404; 为了提高空间反射镜结构中Al/SiC镜架与SiC主镜体之间的Al/SiC-SiC 异质材料连接的可靠性、缓解残余应力、避免裂纹扩展,采用小尺寸接头互锁结构设计并结合 ABAQUS 有限元模拟软件,对不同结构、数量和载荷方式下接头的弯曲应力分布及应力峰值进行了模拟计算.结果表明,深宽比为 1 的钝角型坡口式互锁结构接头的模拟弯曲应力峰值最低,为508 MPa,且该接头中无明显应力集中区域,对接头可靠性优化效果最好.通过钎焊试验进一步验证了该结论,钝角型坡口插接的接头显微形貌无明显缺陷,且其抗弯强度高达 198 MPa....
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| Published in | 焊接学报 Vol. 46; no. 2; pp. 120 - 126 |
|---|---|
| Main Authors | , , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
哈尔滨工业大学,材料结构精密焊接与连接国家重点实验室,哈尔滨,150001%哈尔滨工业大学,材料结构精密焊接与连接国家重点实验室,哈尔滨,150001%北京遥感设备研究所,北京,100854
01.02.2025
中南大学,材料科学与工程学院,长沙,410083 北京遥感设备研究所,北京,100854%北京遥感设备研究所,北京,100854 |
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| Online Access | Get full text |
| ISSN | 0253-360X |
| DOI | 10.12073/j.hjxb.20240905001 |
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| Abstract | TG404; 为了提高空间反射镜结构中Al/SiC镜架与SiC主镜体之间的Al/SiC-SiC 异质材料连接的可靠性、缓解残余应力、避免裂纹扩展,采用小尺寸接头互锁结构设计并结合 ABAQUS 有限元模拟软件,对不同结构、数量和载荷方式下接头的弯曲应力分布及应力峰值进行了模拟计算.结果表明,深宽比为 1 的钝角型坡口式互锁结构接头的模拟弯曲应力峰值最低,为508 MPa,且该接头中无明显应力集中区域,对接头可靠性优化效果最好.通过钎焊试验进一步验证了该结论,钝角型坡口插接的接头显微形貌无明显缺陷,且其抗弯强度高达 198 MPa. |
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| AbstractList | TG404; 为了提高空间反射镜结构中Al/SiC镜架与SiC主镜体之间的Al/SiC-SiC 异质材料连接的可靠性、缓解残余应力、避免裂纹扩展,采用小尺寸接头互锁结构设计并结合 ABAQUS 有限元模拟软件,对不同结构、数量和载荷方式下接头的弯曲应力分布及应力峰值进行了模拟计算.结果表明,深宽比为 1 的钝角型坡口式互锁结构接头的模拟弯曲应力峰值最低,为508 MPa,且该接头中无明显应力集中区域,对接头可靠性优化效果最好.通过钎焊试验进一步验证了该结论,钝角型坡口插接的接头显微形貌无明显缺陷,且其抗弯强度高达 198 MPa. |
| Abstract_FL | To enhance the reliability of Al/SiC-SiC heterogeneous material connections between the Al/SiC mirror frame and the SiC main mirror body in space reflector structures,mitigate residual stress,and prevent crack propagation,a small-scale interlocking joint design was employed.This design was analyzed using the ABAQUS finite element simulation software to simulate and calculate the bending stress distribution and stress peaks under different joint structures,quantities,and loading conditions.The results demonstrate that the trapezoidal groove interlocking joint with an aspect ratio of 1 exhibits the lowest simulated bending stress peak of 508 MPa,with no significant stress concentration areas observed in the joint,indicating optimal reliability optimization.This conclusion was further validated through brazing experiments,which revealed that the trapezoidal groove interlocking joint exhibited no apparent defects in its microstructural morphology and achieved a high bending strength of 198 MPa. |
| Author | 刘杰 王明伟 张子龙 王耿 汪小明 党耀石 张天雷 |
| AuthorAffiliation | 中南大学,材料科学与工程学院,长沙,410083;北京遥感设备研究所,北京,100854%北京遥感设备研究所,北京,100854;哈尔滨工业大学,材料结构精密焊接与连接国家重点实验室,哈尔滨,150001%哈尔滨工业大学,材料结构精密焊接与连接国家重点实验室,哈尔滨,150001%北京遥感设备研究所,北京,100854 |
| AuthorAffiliation_xml | – name: 中南大学,材料科学与工程学院,长沙,410083;北京遥感设备研究所,北京,100854%北京遥感设备研究所,北京,100854;哈尔滨工业大学,材料结构精密焊接与连接国家重点实验室,哈尔滨,150001%哈尔滨工业大学,材料结构精密焊接与连接国家重点实验室,哈尔滨,150001%北京遥感设备研究所,北京,100854 |
| Author_FL | ZHANG Zilong ZHANG Tianlei DANG Yaoshi WANG Geng WANG Mingwei LIU Jie WANG Xiaoming |
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| DocumentTitle_FL | Finite element simulation of bending stress in Al/SiC-SiC interlocking structure brazed joints |
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| Keywords | residual stress 异质材料钎焊 结构设计 数值模拟 残余应力 structural design numerical simulation dissimilar material brazing |
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| Title | Al/SiC-SiC互锁结构钎焊接头有限元弯曲应力模拟 |
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