2)单元输出结果 ELSTRESS or STRESS) ELFORCE (or FORCE) STRAIN 其它 OFREQUENCY(control solution output frequencies) 88频变弹簧和阻尼器 (1)弹簧刚度和阻尼器阻尼系数为频变函数 (2) CBUSH定义一般弹簧、阻尼连接 3) PBUSH定义名义上的弹簧、阻尼连接 (4) PBUSHT定义变频弹簧、阻尼器的值 8.8.1 CBUSH卡片 1)定义广义弹簧阻尼器结构单元,可为非线性或频变 2)格式 CBUSH Example 1: Noncoincident grid points. CBUSH Example 2: GB not specitied CBUSH Example 3: Coincident grid points (GA= GB) CBUS Example 4: Noncoincident grid points with fields 6 through 9 blank and a spring-dampor offset CBUSH39 Field Contents Element identification number. (Integer>0) Property identification number of a PBUSH entry. (Integer0: Default=EID) Grid point identification number of connections points. See Remark 6.(Integer >O) Components of orintation vector&, from GA, in the displacement coordinate system at GA.(Real) Altemate method to supply vector t using grid point GO. Direction of t is from ga to GO. t is then transferred to End A. See Remark 3. (Integer >o CID Element coordinate system identification. A0 means the basic coord inate system. If CID is blank, then the elment coordinate system is determined from Go or Xi. See Figure 1 and Remark 3. ( Integer 20 or blank2）单元输出结果 3）其 它 8.8 频变弹簧和阻尼器 (1) 弹簧刚度和阻尼器阻尼系数为频变函数 (2) CBUSH定义一般弹簧、阻尼连接 (3) PBUSH定义名义上的弹簧、阻尼连接 (4) PBUSHT定义变频弹簧、阻尼器的值 8.8.1 CBUSH 卡 片 1） 定义广义弹簧-阻尼器结构单元，可为非线性或频变 2） 格式