Fixed Problem Caused By Rounding Errors in Beam Module

[Preypatel2413]

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Fixes #22443 Fixes #21162

Brief description of what is fixed or changed

The rounding errors of floats can cause problems in linsolve(), leading to inconsistent results. To address this issue, nsimplify() is used instead of sympify() to convert input values in appropriate sympy types. nsimplify() also converts Float values to Rational values, which helps in removing rounding errors resulting in more accurate solutions from linsolve().

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Fixes #22443
Fixes #21162
#### Brief description of what is fixed or changed
The rounding errors of floats can cause problems in `linsolve()`, leading to inconsistent results. 
To address this issue, `nsimplify()` is used instead of `sympify()` to convert input values in appropriate sympy types. `nsimplify()` also converts `Float` values to `Rational` values, which helps in removing rounding errors resulting in more accurate solutions from `linsolve()`.
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[smichr]

The rounding errors of floats can cause problems in linsolve()

I think this is the classic complaint for which we must "refuse the temptation to guess". nsimplify is an approximation and will work like magic until you give it numbers that get incorrectly simplified. The user should be educated to use the type needed for the problem or a keyword like "prec" could be used to indicate the precision of the float that will be converted to Rational. But an unqualified use of nsimplify should not be done.