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Difference between External force - Rigid Connection and Load direct transfer

Question asked by Sumit Kumar Gupta on Sep 6, 2011
Latest reply on Sep 19, 2011 by Sumit Kumar Gupta

Hi SolidWorks Users,


I have been analysisng an assembly. Basically is it an wall mount to hang other assmbly. I have calculated CG values and location for different modules in assmbly and applied onto mount assmebly through external load - Load/Mass (Rigid Connections). After I run the analysis the fixed loacation in wallmount show resultant force (reaction forces). To my surprise this value is only equal to one of the rigid load applied (that too force applied load). other 2 are not considered while caculating reaction force.

To check this I tried running load with load applied thru Remote Load (Direct transfer). It gives correct resultant force (reaction force) value and much higher stress in mounting.

This implies in rigids out of 3, only 1 load is been consdered and shows stresses only corresponding to 1 load.

can any one guide me thru

1. What is basic difference between the two options

                a. External Load - load/mass (rigid Connections)

                b. Remaote load (Direct transfer)

2. How to decide which is good option to be chosen for analysis. (any thumb rules)


Any help would be much appreciated.