STRENGTH AND ELASTIC STABILITY OF CRANES IN ASPECT OF NEW AND OLD DESIGN STANDARDS

Abstract

In this study the analysis of elastic stability and strength of load - carrying cranes structures, designed according to Polish Standards were carried out. The analysis was compared to the results of the same analysis according to European Standards EN 13001. The analyzed cranes characterize 6 forms of girders, depending on quantity of membranes and stiffeners. Geometrical models were created with UNSP - software carried out for better use of geometrical features base. As the FEM solver the MSC,NASTRAN was used. The elements for creation of FEM model were CTRIA3, CQUAD4, CHEXA, RBE2, CBAR. The stability and strength analysis was carried out for the case of load with hoisting capacity and hoisting winch position in the middle of a span. The results were presented in the form of dimensionless factors W and λ.

http://dx.doi.org/10.5755/j01.mech.17.3.495