Mathcad

Hello everyone! This is my first post, I'm glad to be here. Let's cut to the chase.    I have created  an objective function  which has 5 variables. I gave 5 constraints. Probably a typical problem. But when i try to optimize it with the minimize function mathcad spent all night calculating it and it did not come up with anything. I am new to this, so probably missing the point 🙂 I will be thankful for any piece of advice.

Hallo,   i have a Formula to calculate the elastic plastic transition diameter for autofrettage:   Dp is the elastic plastic diameter. The problem is i need to plement the calculation for DP into microsoft excel. I need a formula to directly calculate DP. Now im using the solve function in excel but the solver is not trustable and does not give always a result where a result is calculateable.   Is there a way to transform the equation so that DP=..... for microsoft excel?   Transforming gives this block in Mathcad   where RE Yield Stress @20°C Di inside diameter Re Outside diameter   lg Stefan

Hello ...I wrote this message three weeks ago:I have a Student Licence of MathCAD 15.0 at Windows 7. The System where I have installed Mathcad has crashed. How can I reinstal MatCAD? Further, I want Install Mathcad 15.0 update at Windows 10.I'm thankful for any help.Regards JurgenI have got a response from this community:You can submit a support request in "Academic Case Logger", here: http://support.ptc.com/appserver/support/academic_case_logger/academic_case_logger.jspThan, I have called up the link, filled out the form and received an answer:Hello,As a University and estore Mathcad support, you have access to our commercial tech support team. For support inquiries, please file a support ticket. You will need your Sales Order Number (SON) or customer number to submit a ticket. Instructions can be found here.If you don’t know your SON or Customer Number, please contact academicsuccess@ptc.comRegards,Abdul Than, I have requested a SON and I have get the followed response:Could you tell

May be it is new art form! What can you say about it? AnimationA picture for Mathcad sheet in attach

Hi everyone, I'm trying to solve this EDO system, finding the solution for x(t) and p(t) with {k1,k2,b} symbolic variables and m=535: System Equations: m*x''(t)=-k1*(x(t)-p(t))-b*(x'(t)-p'(t)) k2*p(t)=k1*(x(t)-p(t))+b*(x'(t)-p'(t))   Initial Conditions would be: x(0)=0 p(0)=0 x'(0)=6.3   Already tried with Wolfram Alpha and Matlab, both giving solutions with terms "Root[#1^3+ (k1 m + k2 m) #1^2 + b^2 k2 m #1 + b^2 k1 k2 m^2&, 1]" in which I don't understand what is represented. Examples attached in following pictures:   Matlab:      

Hi, my solve block is returning a symbolic result rather than a number. What do I need to change to have it return a numerical result? Thank you.

Hi,   I'm trying to make a template that can be used for circuit analysing using Laplace transform. Everything works except that the input signal is not repetitive for a certain number of periods (or continous).   I tried to make an incremented version of the input signal function but it doesn't work. Tried with a "for loop" and the same result. Maybe I don't use it well because if I give a certain time period for t the signal goes forever. I found how to make a periodic function with "mod" or "floor" functions but if I apply Laplace I don't have a good result.   The input signal is a PWL signal and a LC circuit, but you'll see all the details in the attached document. So my question is how to make the input signal repetitive for a certain number of periods.   I use Mathcad Prime 4 or Mathcad 15.   Best regards.

Hi! I get unexpected results when using the Fourier Transform on some common engineering functions: Am I not using the fourier operator correctly?  Please help 🙂

Hello. I am trying to calculate specific resistivity which.   I am inputting   ohm * mm^2 / m   The result, however, outputs kg * mm^3 / s^3 * A^2   Is there any way I can get it to output the result units as the input units?   Thanks.

Hallo,   i have a special problem. My sverweis function is not working properly. Sverweis gives more results than realy exists it should only be 2 results. 152 is no valid result. I added a Paint Picture of my special problem. I need to know the loadcase of the maximum damage (<1 for each)   Thank you, BR Stefan    

Hello,Concerns MathCad Prime 5.0How is it possible to write a complex formula in the frame to make a plot in a graphical component.Sincerely.Denis

I am using MathCAD Prime 5.0.0.0 and I am trying to use a Solver Block for the first time in Prime (I recall using it successfully in the pre-Prime MC).   I am wanting to solve a single ODE. So I decided to run through the Task 3-3:Solving ODEs with Solve Blocks tutorial on the support site to figure out the correct syntax etc.   I defined the 3 variables: m, c, and k as shown in the tutorial. I defined the function u(t) as shown in the tutorial. I then created a solve block by clicking on the Solve Block button under the Math menu tab.   That put the Solve Block with the Guess Values, Constraints, and Solver regions in my MathCAD worksheet.   My understanding from the tutorial is that I did not need to enter anything in the Guess Values regions but that I would need to enter the formula for the derivatives of x(t) in the Constraints region along with the two initial value expressions. And that I would then need to enter the x := odesolve(x(t), 20) in the Solver reg

Our technology people accidentally installed Mathcad Prime 5.0 on a classroom computer instead of 4.0.  When they addressed their mistake they found they could not install 4.0 and a cryptic error message with no detail was given.  (See screenshot attached).   They were able to uninstall Mathcad 5 (though I have both on my laptop with this.     Please advise.. I need that console working with Prime 4 in class.   Cheers and Thanks Much! Bill Capehart SD School of Mines

There is a quadratic algebraic equation. Is it possible, according to its coefficients a, b, and c, to form a system of two linear algebraic equations with the same roots as the quadratic equation? Others word! Can I use the lsolve function for the solving a quadratic algebraic equation?

Hi guys,   I have to export data for 3d plotting in excel. what I have is a function f(x,y) which gives me the results in vector form of course.  anybody know how I can convert the vector into a matrix or export it to an excel sheet.   Best   ALi

The only thing that changed is the 1809 Update on my OS so I guess that's the cause but I don't know how to fix it. Also Mathcad 4 does not work either.   Things I've done to try and fix: - Delete and restore/ delete Mathcad related stuff in my AppData folder in Local and Roaming and Temp - Reinstall countless times on different hard drives (both version 5 and 4) - Turn off UAC/ Antivirus before installation and/or completely - Checked to see if Mathcad window was just hidden, it wasn't - Install all the vcredist, msxml and .net framwork stuff   This all applies to Mathcad 4 and 5 which worked flawlessly before the Windows 10 -1809 Update I have the student version and refreshing license does not work either. The logo appears, fades away and only the background process is left in task manager.

I've met something very strange.... MC15 file is attached

Hi to all. I need to generate a routine that separates into columns texts that contain words separated by a comma "," as shown in the image. Is this possible? Thanks in advance

to all   I am struggling to set up the eigenvalue described in the attached mcad v15 sheet (or pdf). Could someone who understand these things enlighten me?   Thanks Regards

Hi everybodyI have a system of equations with three variables that depend on each other and that are solved by iteration. What I am trying to do is to leave this system of equations in function to the variables ds, Ds and Dliq.To better understand what I want, I have attached an example of what I want to do.In advance thanks for the help.

Greetings dear colleagues of the forum, I am looking for help to solve the non-linear differential equation of second order corresponding to a beam: In this equation:- M is a function that is written in terms of x. This function is variable, it depends on the loads applied to the beam.- E and I are constant values. The first is the modulus of elasticity (E) and the second corresponds to the moment of inertia (I).- v is the unknown that I want to obtain and is written in terms of x. Varies for each beam, same as M, depending on the configuration of applied loads.   I am interested in clearing the deflection "v" that occurs in the beam since I am verifying the results obtained with a structural analysis software called Ftool (https://www.ftool.com.br/Ftool/).   In most books they only present exercises using the previous equation but in its reduced (simplified) version: In this case the solution consists of integrating twice, obtaining: Resolving several cases by hand and

Hello everyone,   I would like to sample a half sine, so I made a conditional function which represents the halve sine. It plots perfectly. However when I try to sample it, it does not work the same anymore as the regular sine function, and therefore I cannot get the DFT. Any Ideas?

Hello .... I have a Student Licence of MathCAD 15.0 at Windows 7. The System where I have installed Mathcad has crashed. How can I  reinstal MatCAD? Further, I want Install Mathcad 15.0 update at Windows 10. I'm thankful for any help. Regards Jurgen

Hello,   Can I have units in contour plot? I mean, i have stress function for example: σ=σ(x,y)   x=[m] y=[m] σ=[MPa]