Strength calculation of steel skip
strength calculations, calculations of fatigue, as well as calculations of welded and bolted connections metallokonstuktsii skip to lift iron ore on the basis of the agreement with LLC "Company" Rosresursy K "specialists of STC APM implemented. Calculations were performed using APM Structure3D complex and APMJoint, members of the APM WinMachine system, version 10.0. Initial data for construction of computational models of the bridge is transferred to the customer assembly drawings and the 3D model of the product.
In the process of creating the model the following normative documents were used:
1. SNIP 2.01.07-85 *: Loads and effects.
2. SNIP II-23-81 *: Steel structures.
Strength calculation of steel skip "Vityaz-4.25"
Specialists of STC APM was built finite element model Skip "Knight-4.25". As a finite element model to create as separate parts and the entire pattern as a whole, used core and the plate (the shell) finite elements.
Application of loads carried out in phases, by establishing loadings, each responsible for a particular power factor.
The calculation was made taking into account the dead weight, weight counterbalancing ropes and payload. To calculate all possible variants the effect of external factors on the design of combination set 2 loading.
During the calculation to determine the maximum equivalent strain and corresponding displacement for load combinations.
the following conclusions were drawn from the results of the calculations:
1. Analysis of the results of static analysis shows that for given loads calculated equivalent stresses arising in the skip structure elements do not exceed the yield strength of the materials used, i.e. necessary strength is provided.
2. The maximum deflection design skip arising from external loads do not exceed the allowable limit. That is a necessary rigidity is provided by the supporting frame.
Summarizing the results, we can conclude that the skip structure capable of carrying the load applied to it, the relevant technical requirements, and does not require additional measures to increase the strength characteristics.
This work has shown the applicability of structural analysis module APM Structure3D to solve complex problems of structural analysis of lifting equipment.