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| 双材料弯扭断裂问题 | |
| 引用本文： | 杨林,赵绚,冯贵林,李俊林.双材料弯扭断裂问题[J].佳木斯大学学报,2014(5):760-762. |
| 作者姓名： | 杨林 赵绚 冯贵林 李俊林 |
| 作者单位： | 1. 太原科技大学运城工学院基础部,山西 运城,030024 2. 运城师范高等专科学校数计系,山西 运城,044000 3. 太原科技大学应用科学学院,山西 太原,030024 |
| 基金项目： | 山西省自然科学基金(2011011021-3)；2012年山西省高等学校教学改革项目(高职)重点项目(JG2012059)． |
| 摘 要： | 研究了正交异性双材料界面裂纹断裂的问题,根据叠加原理和偏导数的加法定理,在受弯扭载荷混合作用下,当特征方程组的判别式Δ10,Δ20时,推导出了受弯扭载荷作用下的含中心穿透双材料界面裂纹尖端附近的弯矩、扭矩、应力场的理论公式.从理论结果上可以看出双材料界面裂纹尖端附近应力场不具有振荡奇异性.此结论对于结合材料的强度和可靠性评价具有重要意义. |
| 关 键 词： | 双材料 正交异性 弯扭载荷 界面裂纹 中心穿透 |
The Torsion Fracture Problem of Bi-material |
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| YANG Lin,ZHAO Xuan,FENG Gui-lin,LI Jun-lin.The Torsion Fracture Problem of Bi-material[J].Journal of Jiamusi University(Natural Science Edition),2014(5):760-762. | |
| Authors: | YANG Lin ZHAO Xuan FENG Gui-lin LI Jun-lin |
| Institution: | YANG Lin, ZHAO Xuan, FENG Gui-lin, LI Jun-lin ( I. Foundation l)epartmmt, Yuncheng Institute of Technology, Taiyuan University of Science and Technology, Yuncheng 044000, China; 2. Depantment of Mathematics and Computer Science, Yuncheng Teacher＇ s College, Yuncheng 044000, Chino ;3. School of Applied Science, Talyuan University of Science and Technology, Taiyuan 030024, China; ) |
| Abstract: | The problem of the orthotropic bi -material interface crack fracture was studied .Under ben-ding and torsion loads , when the characteristic equations discriminant is Δ1 〉0 andΔ2〈0 , the theoretical for-mula of moment , torque and stress field closed to double penetration interfacial crack tip with center penetrate can be deduced based on the theorem of the superposition principle and partial derivative .From the theoretical results , the stress fields closed to dual -material interface crack-tip has no singularity of oscillations can be re-solved.The conclusion is of great significance to the strength and reliability evaluation of the bonded materials . |
| Keywords: | bi-material orthogonality bending and torsion loads interface crack center penetrate |
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