? 温度影响: MATX13 Description 在几何非线性分析中,为刚性材料扩展材料属性。(怎么用?未说明) This is an elasto-plastic law with strain rate and temperature effects. Format (1) MATX13 (2) MID (3) (4) (5) (6) (7) (8) (9) (10) 例子: (1) MAT1 (2) 102 (3) 10.0 (4) (5) 0.495 (6) 6.0E-10 (7) (8) (9) (10) MATX13 102 MATX21(略) Description 在几何非线性分析中,扩展Rock-Concrete材料属性。 Format MATX25(略) OPSTRUCT材料说明 | 2015/12/1 Description 在几何非线性分析中,扩展Tsai-Wu and CRASURVT材料属性。 Format MATX27(略) Description 在几何非线性分析中,扩展Elastic-Plastic Brittle材料属性。 Format 25 MATX28(蜂窝材料属性扩展) Description 在几何非线性分析中,扩展蜂窝材料属性扩展。 Format (1) MATX28 (2) MID TIID11 (3) (4) (5) (6) (7) (8) (9) (10) TIID22 TIID33 IFLAG1 FSCAI11 FSCAI22 FSCAI33 EPSFI11 EPSFI22 EPSFI33 TIID12 TIID23 TIID31 IFLAG2 FSCAI12 FSCAI23 FSCAI31 EPSFI12 EPSFI23 EPSFI31 例子 (1) MAT9ORT (2) 102 (3) 0.2 (4) 0.02 (5) 0.02 (6) 0.33 (7) 0.33 (8) 0.33 (9) 0.286E-7 (10) OPSTRUCT材料说明 | 2015/12/1 MATX28 102 11 0 12 0.0 0.1 0.01 0.1 1.0 1.0 1.0 22 0 23 0.0 33 0 31 0.0 NEGSTR NEGSTR 1.0 1.0 1.0 参数定义 MID TIID11 TIID22 TIID33 MAT9ORT材料编号 TABLES1编号,用于定义11方向上的初始屈服应力关系式, TABLES1编号,用于定义22方向上的初始屈服应力关系式, TABLES1编号,用于定义33方向上的初始屈服应力关系式 26 IFLAG1 Strain formulation for yield functions 11, 22, and 33. See comment 4. Default = VOLSTR (VOLSTR, STR, or NEGSTR) VOLSTR - Yield stress is a function of volumetric strains. STR - Yield stress is a function of strains. NEGSTR - Yield stress is a function of negative strains. FSCAI11 Scale factor on initial yield stress function in direction 11. Default = 1.0 (Real) FSCAI22 Scale factor on initial yield stress function in direction 22. Default = 1.0 (Real) FSCAI33 Scale factor on initial yield stress function in direction 33. Default = 1.0 (Real) EPSFI11 Initial failure strain under tension or compression in direction 11. (Real) EPSFI22 Initial failure strain under tension or compression in direction 22. (Real) EPSFI33 Initial failure strain under tension or compression in direction 33. (Real) TIID12 Identification number of a TABLES1 that defines the initial shear yield stress function in direction 12. No default (Integer > 0) TIID23 Identification number of a TABLES1 that defines the initial shear yield stress function in direction 23. No default (Integer > 0) TIID31 Identification number of a TABLES1 that defines the initial shear yield stress function in direction 31. No default (Integer > 0) OPSTRUCT材料说明 | 2015/12/1 IFLAG2 Strain formulation for yield functions 12, 23, and 31. Default = VOLSTR (VOLSTR, STR, or NEGSTR) VOLSTR - Yield stress is a function of volumetric strains. STR - Yield stress is a function of strains. NEGSTR - Yield stress is a function of negative strains. FSCAI12 Scale factor on initial shear yield stress function in direction 12. Default = 1.0 (Real) 27 FSCAI23 Scale factor on initial shear yield stress function in direction 23. Default = 1.0 (Real) FSCAI31 Scale factor on initial shear yield stress function in direction 31. Default = 1.0 (Real) EPSFI12 Initial failure strain under tension or compression in direction 12. (Real) EPSFI23 Initial failure strain under tension or compression in direction 23. (Real) EPSFI31 Initial failure strain under tension or compression in direction 31. (Real) 说明 ? MATX28与MAT9ORT联合使用; ? 该法则与10节点四面体单元 是兼容的,在PSOLIDX卡片中,与ISOLID=1/2/12是兼容的。 ? 该法则与IFRAME = OFF不兼容。 ? 当到达失效应变时,单元被删除; MATX33(泡沫材料属性扩展) Description 在几何非线性分析中,扩展Visco-Elastic Plastic Foam Material。 粘弹性泡沫材料 Format (1) MATX33 (2) MID A (3) KA B (4) TID C (5) FSCALE E1 (6) P0 E2 (7) PHI ET (8) EPSV0 ETAC (9) (10) ETAS (1) MAT1 (2) 133 (3) 0.11 (4) (5) 0.11 (6) 9.92E-07 (7) (8) (9) (10) MATX33 133 0 参数定义 28 OPSTRUCT材料说明 | 2015/12/1 例子 Field MID KA Contents MAT1编号 Flag for analysis type. Default = ELAST (Character = ELAST, VISCO) ELAST: the skeletal behavior before yield is elastic. VISCO: the skeletal behavior before yield is visco-elastic. TID TABLES1编号,TABLES1用于定义屈服应力与体积应变之间的关系式 FSCALE 屈服曲线中应力的比例系数,默认为1 P0 PHI EPSV0 A B C E1 E2 ET ETAC ETAS OPSTRUCT材料说明 | 2015/12/1 初始空气压力,默认为0 泡沫转为聚化物的速率 初始体积应变,默认为0 屈服参数,默认为0 屈服参数,默认为1 屈服参数,默认为1 E更新系数 E更新系数 切向模量 纯压缩时的粘性系数,默认为1 纯剪切时的粘性系数,默认为1 说明 ? 空气压力计算公式Φ 多孔性, P0 是初始空气压力,0其中,体积应变; 是初始体积应变; < 0 时为压缩。 ? 若TID为空或者0,有σy = A + B(1+ Cγ), with = V/V0 - 1 = ρ/ρ0 - 1 = -μ/(1+μ) ? ? 若TID定义了,则σy vs. is数据来自TID; 杨氏模量计算公式为E = max(E, E1 + E2) 29
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