应力诱发界面扩散下夹杂演化的有限元模拟

来源 :固体力学学报 | 被引量 : 0次 | 上传用户：flyliubo

【摘要】

：

应力作用下内连导线中的夹杂等缺陷会迁移和变形,从而影响电子器件的可靠性.论文基于应力诱发表面扩散机制下的弱解描述,推导了固-固界面在界面扩散机制下的有限单元控制方程,并数值分析了应力诱发界面扩散下金属内连导线中夹杂的形貌演化.研究结果表明:在拉压应力下,夹杂会发生分节或者圆形化;在双向等值拉应力下,夹杂存在着沿长轴生长和圆形化两种分叉趋势.并且存在着临界应力、临界形态比和临界线宽.形态比、应力越小或线宽、模量比越大,夹杂越易演化为圆形.

【作者】

：

井亚彬黄佩珍

【机构】

：

南京航空航天大学机械结构力学及控制国家重点实验室,南京,210016

【出处】

：

固体力学学报

【发表日期】

：

2022年1期

【关键词】

：

夹杂演化界面扩散有限单元法应力迁移

下载到本地 , 更方便阅读

下载此文赞助VIP

声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架

论文部分内容阅读

其他文献

含铋剂四联方案治疗幽门螺杆菌阳性临床观察

目的:对比不同方案在Hp阳性慢性胃炎患者中的应用价值.方法:90例Hp阳性慢性胃炎患者随机分组,对照组予奥美拉唑、磷酸铝凝胶、羟氨苄青霉素与克拉霉素,观察组予埃索美拉唑、胶体果胶铋胶囊、阿莫西林与呋喃唑酮,两组均持续给药4周后评估疗效.结果:观察组总有效率(97％VS85％)、幽门螺杆菌(Hp)根除率(93％VS78％)高于对照组(P<0.05).症状缓解时间(2.13±0.58天VS3.54±0.65天)和住院时间(4.11±1.05天VS6.33±1.23天)短于对照组(P0.05).结论:含铋剂方案

期刊

铋剂幽门螺杆菌慢性胃炎治疗

Dynamic Fracture Simulation of Functionally Graded Engineered Cementitious Composite Structures Base

In this paper,a semi-discrete model based on peridynamics(PD)for engineered cementitious composites(ECCs)is applied to simulate the fracture behavior of functionally graded ECC(FGECC)beams.This is a new application of PD in ECC.Prior to simulating the cra

期刊

PeridynamicsFunctionally graded ECC structuresSemi-discrete modelsDynamic fra

Valley-Chiral Edge States of Antisymmetric Plate Wave in Phononic Crystals with Linear Defect

In this work,two typical interfaces are established for the antisymmetric plate wave by introducing linear defect in between phononic crystals with opposite valley Hall phases.The evolution of projected curves is demonstrated as the defect width increases

期刊

Topological edge stateValleyTransverse symmetryPlate wave

Band-gap Properties of Elastic Sandwich Metamaterial Plates with Composite Periodic Rod Core

A novel elastic sandwich metamaterial plate with composite periodic rod core is designed,and the frequency band-gap characteristics are numerically and experimentally inves-tigated.The finite element and spectral element hybrid method(FE-SEHM)is developed

期刊

Sandwich metamaterial plate with composite periodic rod coreFinite element meth

An Optimal Design of the Two-Staged Square Sectional Combined Energy Absorption Structure with Local

In this paper,a local surface nanocrystallization technology is used for thin-walled structures with square cross sections,and an energy absorption device of two-staged combined energy absorption structure is proposed.In virtue of the surface nanocrystall

期刊

Local surface nanocrystallizationTwo-staged energy absorptionSquare cross-sect

Multiple Impact Phenomenon in Impact Hammer Testing:Theoretical Analysis and Numerical Simulation

As conducting an impact hammer testing during experimental modal analysis,the multiple impact phenomenon must be avoided.It is generally recognized that the multiple impact phenomenon is induced by the tester\'s improper operation and can be avoided thr

期刊

Impact hammer testingModal analysisMultiple impactTheoretical analysisNumeri

A Peridynamic Model for the Dynamics of Defects with Asymmetric Potential Wells

The peridynamic model of a solid is suitable for studying the dynamics of defects in materials.We use the bond-based peridynamic theory to propose a one-dimensional nonlocal continuum model to study a defect in equilibrium and in steady propagation.As the

期刊

Peridynamic theoryDefect propagationPhase transformationThe Wiener-Hopf metho

Electromagnetic-Thermo-Mechanical Coupling Behavior of Cu/Si Layered Thin Plate Under Pulsed Magneti

Semiconductor-based electronic devices usually work under multiphysics fields rendering complex electromagnetic-thermo-mechanical coupling.In this work,we develop a penalty function method based on a finite element analysis to tackle this coupling behavio

期刊

Electromagnetic-thermo-mechanical coupling behaviorFinite element methodPulse

Stress-Induced Uphill Diffusion with Interfacial Contact Loss in Solid-State Electrodes

We simulate the mechanical-chemical coupling during delithiation and relaxation of a cathode in a solid-state lithium-ion battery.Contact loss at the interface between the active particle and the solid electrolyte is considered.Uphill diffusion is observe

期刊

Solid electrolyteContact lossUphill diffusionMechanical-chemical couplingChe

Strain Engineering for the Kapitza Resistance of the ZrO2/α-Al2O3 and YSZ/α-Al2O3 Interfaces

The Kapitza resistance is of fundamental importance for the thermal stability of the interface between the ceramic top coat and the thermal growth oxide layer in the thermal barrier coating structure,which is widely used to protect high-temperature compon

期刊

Kapitza resistanceCompressive strainTemperatureSize

应力诱发界面扩散下夹杂演化的有限元模拟

与本文相关的学术论文