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jreddy1-Visitor
1-Visitor
December 12, 2014
Solved

solve block problem

  • December 12, 2014
  • 3 replies
  • 1203 views

how can i get T_2_10k=2360 at the end as a result

Best answer by Werner_E

You may use the normal assignment operator to assign a variale the result of a symbolic evaluation. Or is the question meant how to get the positive result only?

You have not used a solve block, as your subject pretends. You wouldn't experience the problem if you had used a solve block as you could use constraints in a solve block.

With the symbolics you may either use "assume" to tell muPad that all variables (units are seen by the symbolics as unknown varaibles, too) are positive

1.png

or you may assign the symbolic result to a variable and then pick the correct solution yourself using the vector index

2.png

3 replies

F
Fred_Kohlhepp23-Emerald I
23-Emerald I
December 12, 2014

jagadeesh reddy wrote:

how can i get T_2_10k=2360 at the end as a result

You're solving for the torque at which the part fails. The units need to be ft lbf, not psi.

S
StuartBruff23-Emerald V
23-Emerald V
December 12, 2014

Assign the result of the symbolic result to a variable, extract the element you want and then change the Result display format to Decimals = 0 and Exponential Threshold = 5 (or some suitably large number to stop the exponent displaying).

Stuart

W
Werner_E25-Diamond IAnswer
25-Diamond I
December 12, 2014

You may use the normal assignment operator to assign a variale the result of a symbolic evaluation. Or is the question meant how to get the positive result only?

You have not used a solve block, as your subject pretends. You wouldn't experience the problem if you had used a solve block as you could use constraints in a solve block.

With the symbolics you may either use "assume" to tell muPad that all variables (units are seen by the symbolics as unknown varaibles, too) are positive

1.png

or you may assign the symbolic result to a variable and then pick the correct solution yourself using the vector index

2.png

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