中国机械工程
中國機械工程
중국궤계공정
CHINA MECHANICAl ENGINEERING
2012年
12期
1456-1461
,共6页
ABAQUS/Explicit%PCB%稳定时间极限%能量平衡%冲击载荷
ABAQUS/Explicit%PCB%穩定時間極限%能量平衡%遲擊載荷
ABAQUS/Explicit%PCB%은정시간겁한%능량평형%충격재하
ABAQUS/Explicit%printed-circuit-board(PCB)%stable time's limit%theory of energy balance%impact load
分析了ABAQUS/Explicit动力学的中心差分算法、稳定时间极限、能量平衡理论,研究了材料刚度、密度等力学参数以及网格密度对稳定时间极限和能量平衡的影响。建立了PCB板跌落的有限元模型,并采用惠斯通电桥测量应变法验证了有限元模型的准确性,在此基础上进行PCB板跌落研究。结果表明：ABAQUS/Explicit能够非常精确地处理冲击载荷问题;运用能量平衡理论可以在满足精度的前提下尽可能减小计算量。
分析瞭ABAQUS/Explicit動力學的中心差分算法、穩定時間極限、能量平衡理論,研究瞭材料剛度、密度等力學參數以及網格密度對穩定時間極限和能量平衡的影響。建立瞭PCB闆跌落的有限元模型,併採用惠斯通電橋測量應變法驗證瞭有限元模型的準確性,在此基礎上進行PCB闆跌落研究。結果錶明：ABAQUS/Explicit能夠非常精確地處理遲擊載荷問題;運用能量平衡理論可以在滿足精度的前提下儘可能減小計算量。
분석료ABAQUS/Explicit동역학적중심차분산법、은정시간겁한、능량평형이론,연구료재료강도、밀도등역학삼수이급망격밀도대은정시간겁한화능량평형적영향。건립료PCB판질락적유한원모형,병채용혜사통전교측량응변법험증료유한원모형적준학성,재차기출상진행PCB판질락연구。결과표명：ABAQUS/Explicit능구비상정학지처리충격재하문제;운용능량평형이론가이재만족정도적전제하진가능감소계산량。
The theories of central difference arithmetic,stable time＇slimit and the theory of energy balance were analyzed systematically,the impact of stable time＇s limit and energy balance due to mechanical parameters of materials such as stiffness,density and mesh density was researched.Then a finite element model was built and the method of Wheatstone bridge was used to validate model＇s accuracy.Finally,a detail research on PCB collision was made based on the experiments and simulation,it indicates that ABAQUS/Explicit can deal with the impact load precisely.The calculation cost will be reduced and the precision will be satisfied as well by applying the theory of energy balance,the strength of the packaging meets the reliability requirements of PCB.
