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作者:

Yu Huiping (Yu Huiping.) | Hu Mingqing (Hu Mingqing.) | Qin Fei (Qin Fei.) (学者:秦飞) | An Tong (An Tong.) | Chen Pei (Chen Pei.) | Pi Bensong (Pi Bensong.)

收录:

CPCI-S

摘要:

In this paper, cohesive zone modeling(CZM) was adopted to simulate the distribution of temperature & stress field and the interface damage on the Cu/EMC double adhesive material electronic packaging. The following phenomena were found: A sharp rise of the EMC temperature appeared at cut portion field when the cutting began, while it had little effect on copperplate. Stress concentration existed at the cutting surface boundary, and the maximum value occurred at the top of the copper plate which had exceed the yield and tensile strength of the viscoelastic copper, this will be prone to drag and generate burr on the copper surface. Contact surface damage occurred mainly in first time step, the first site of injury occurred in the medial side of the cutting surface. The interfacial tension stress was smaller than the maximum normal stress set up by CZM, while the interface tangential stress was greater than the maximum tangential contact stress that the material can bear, which would cause damage to the bonding interface. Compared with normal strain energy release rate due to separation in normal direction (mode I debonding), shear strain energy release rate due to separation in tangential direction(mode II debonding) was larger, but it did not reach the critical strain energy release rate in the shear directions. The contact interface was not completely cracked and cracking trend was mainly mode II crack in this case.

关键词:

Cohesive zone model Cutting simulation Interface delamination Thermal-mechanical coupled

作者机构:

  • [ 1 ] [Yu Huiping]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 2 ] [Hu Mingqing]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 3 ] [Qin Fei]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 4 ] [An Tong]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 5 ] [Chen Pei]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 6 ] [Pi Bensong]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China

通讯作者信息:

  • [Yu Huiping]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China

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来源 :

2016 17TH INTERNATIONAL CONFERENCE ON ELECTRONIC PACKAGING TECHNOLOGY (ICEPT)

年份: 2016

页码: 943-946

语种: 英文

被引次数:

WoS核心集被引频次: 1

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