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MH_106330941-Visitor
1-Visitor
March 25, 2023
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Questions: How to define constants without units? Why scalar-error? What term is missing?

  • March 25, 2023
  • 2 replies
  • 1836 views

Hi,

I`m new to Mathcad and struggle with a few things.

 

1) I try to define a few values, like:

  • Rm:=810MPa (that worked)
  • Rz:=6,3 (without a unit)
  • MH_10633094_0-1679733786110.png

     

Mathcad always wants to have a unit. Can I somehow set a value without?

 

2) When I try to calculate, I get the error "this value must be a scalar or a matrix". I just want it to be a number. What`s wrong?

MH_10633094_1-1679733896836.png

 

3) What does Mathcad require here?

MH_10633094_0-1679734775373.png

 

 

Thanks!

 

Best regards
Martin

Best answer by terryhendicott

Hi Martin

Welcome to Prime and the community

Prime uses the decimal point "." full stop for decimal numbers

Prime uses the range operator "," comma for range value creation

This is the source of error in the equation for KRsigma
Capture.JPG

Cheers

Terry

2 replies

T
21-Topaz II
terryhendicott21-Topaz IIAnswer
21-Topaz II
March 25, 2023

Hi Martin

Welcome to Prime and the community

Prime uses the decimal point "." full stop for decimal numbers

Prime uses the range operator "," comma for range value creation

This is the source of error in the equation for KRsigma
Capture.JPG

Cheers

Terry

M
MH_106330941-VisitorAuthor
1-Visitor
March 25, 2023

Thanks Terry! Now it works.

 

Regards
Martin

T
21-Topaz II
terryhendicott21-Topaz II
21-Topaz II
March 25, 2023

Hi Martin,

This is your equation three.

Beside the use of comma where Prime insists you use decimal point, there is also the need to use a unit of length for 6.3 to divide by micrometer.

Capture2.JPG

Cheers

Terry

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