Otherwise, material non-linearity will lead to the calculator results being inaccurate. In order for the truss calculator results to be valid, all members must remain within their elastic range. The toolbox will issue a warning if the deflection exceeds 10% of the maximum inter-nodal distance, but this limit is itself arbitrary.Ĭheck 11 indicates if any members have exceeded their specified yield stress. You must use your own engineering judgement to assess the acceptability of deflections. Very large deflections, in comparison to the scale of the structure, suggest the structure and/or loading merit further investigation. This gives an indication as to whether or not the calculated deflections are unreasonably large. This number should theoretically be zero, although it will actually be a very small number due to the way small numbers are handled within programming languages.Ĭheck 10 calculates the maximum nodal deflection as a proportion of the largest inter-nodal distance in the structure. Checks 8 and 9 check for horizontal and vertical force equilibrium and report the difference between applied forces and reactions. Pay particular attention to items numbered 8 to 11. Analysis report generated by truss calculator
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