Analysis of flexibility of the support and its influence on dynamics of the grab crane

dynamic analysis of the model of the grab crane with the flexibly supported base is presented in the paper. the analyzed grab crane is the structure of the open-loop kinematic chain with rigid links. joint coordinates and homogenous transformations are used in order to describe dynamic behavior of the system. equations of the motion of the systems are derived using lagrange's equations of the second order and integrated newmark's method with iterative procedure. the commercial package msc.adams is used in order to verify own program. the range of analysis concerns influence of different values of vertical stiffness coefficients in the supports and means of fixing of the load on its motion.