Complex geological body is main types of complex oil and gas reservoir, and its irregular geometrical shape and acutely variable velocity have an effct upon the accurate imaging of complex reservoir.
The geometrical structure of cam bear frames joining to leaf springs of variable stiffness play an important role on the causes which affect elastic characteristics of suspensions.
可变刚度板簧凸轮形支架的几何结构是影响悬架弹性特性的重要环节之一。
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Based on the 3_d deteriorated girder element, the formulae of FEM for elastic stability of variable cross_section compression bar concerning geometrical nonlinearity have been derived.