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zhaomingdagonglvfaguanerjiguan
根据传热理论, 建立了大功率发光二极管的有限元模型. 选择了4 种键合材料( 高导热导电
银胶、纳米银焊膏, 大功率芯片键合胶、Sn70Pb30) , 4 种基板材料( Al2O3、A lN、A-l SiC、铜钼合金) .
采用ANSYS 有限元热分析软件进行了温度场仿真, 得到了大功率发光二极管封装材料的最优选
择. 研究了基板厚度、芯片输出功率及外接热沉时对发光二极管结温的影响.(Heat transfer theory, the finite element model of the high-power light-emitting diode. Choose four kinds of bonding material (high thermal conductive silver glue, nano-silver paste, high-power chip bonding glue Sn70Pb30) substrate material ( Al2O3, A lN, Al SiC, copper molybdenum alloy). temperature field simulation using ANSYS finite element thermal analysis software, the optimal choice of high-power light-emitting diode packaging materials. substrate thickness, chip output power and external heat Shen light-emitting diode junction temperature.)
- 2012-10-25 13:22:30下载
- 积分：1
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MTT
通过滑动T检验时间序列的变化趋势，一般多用于气象分析(T-test time series by sliding the trend, generally used for weather analysis)
- 2013-09-05 16:49:32下载
- 积分：1
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多种评价方法的计算
说明： 包含马尔可夫预测、贝叶斯决策、模糊聚类分析、模糊综合评价方法等多种计算方法(Including Markov prediction, Bayesian decision-making, fuzzy clustering analysis, fuzzy comprehensive evaluation and other calculation methods)
- 2020-03-25 16:44:42下载
- 积分：1
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Dieselengine
一个柴油机模型，能计算柴油机的油耗率，扭矩(a diesel engine modle)
- 2021-01-11 11:18:49下载
- 积分：1
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rkf45
fortran90程序，运用Runge-Kutta法数值求解常微分方程的程序，非常适用，包括源代码、一个算例和输出程序(fortran90 procedures, the use of Runge-Kutta method for numerical solution of ordinary differential equations of the process, is very applicable, including source code, a numerical example and output procedures)
- 2009-09-17 02:05:54下载
- 积分：1
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abod
对于chebyshev法只能对于均匀线阵，本程序实现对任意结构阵列的波束优化(Chebyshev method for only the uniform linear array, the program structure of arbitrary beam array optimization)
- 2008-02-29 10:13:56下载
- 积分：1
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Classificacao
Code for Classification of points
- 2012-09-22 21:07:01下载
- 积分：1
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program
程序包中含有Lagrange插值、Newton插值、Hermite插值、jacobi迭代、gauss迭代、 超松弛迭代、cholesky分解(Package contains Lagrange interpolation, Newton interpolation, Hermite interpolation, jacobi iteration, gauss iteration, ultra-relaxation iteration, cholesky decomposition)
- 2008-12-17 20:18:47下载
- 积分：1
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bubble-dynamic-mesh
气泡根据内外压力差变化的动网格。。。。。。(bubble dynamic mesh )
- 2014-02-10 15:52:37下载
- 积分：1
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five
计算声发射时域信号特征值：裕值，振幅因子FK、fc，峭度，(Calculation of acoustic emission time-domain signal characteristic values: margin value, the amplitude factor FK, fc, kurtosis,)
- 2012-07-14 15:31:54下载
- 积分：1
