thelandofthebravepeople
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Can anyone tell me to solve this equation for D1, D2, D3
The E and I are given.
The E and I are given.
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Need help with Matrix. Math Maple
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Syed1
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Do you know E and I?
thelandofthebravepeople
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E*i =5250
Syed1
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Ok for explanation purposes... the vector on the extreme left we will call A. E and I are constants, don't worry about them. The big three by three matrix we will call M. The unknown vector we will call D and the last one we will call B.
Right now your equation is something like:
A = E x I x M x D + B
1. ExI x M x D = A - B (you can subtract B from A since both have same numbers of rows and columns, we will call it C)
2. ExI x M x M^-1 x D = CxM^-1 (introduce M inverse on both sides of the equation, on the left hand side M and M inverse will cancel out, on the right you will have to find out M^-1 and multiply it with vector C, we call result F )
3. D = 1/(ExI) x F
Right now your equation is something like:
A = E x I x M x D + B
1. ExI x M x D = A - B (you can subtract B from A since both have same numbers of rows and columns, we will call it C)
2. ExI x M x M^-1 x D = CxM^-1 (introduce M inverse on both sides of the equation, on the left hand side M and M inverse will cancel out, on the right you will have to find out M^-1 and multiply it with vector C, we call result F )
3. D = 1/(ExI) x F
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Syed1
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Btw what grade are you in?
thelandofthebravepeople
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Thank you so much for your help. Did not expect it this quickly 
I am in Uni. I study structural engineering.
This equation came up while using stiffness method to solve reactions of a beam. I have long forgotten how to solve matrix equations. You forget it quickly when you don't use it.
How come you are so good at it?
Thanks a lot again
I am in Uni. I study structural engineering.
This equation came up while using stiffness method to solve reactions of a beam. I have long forgotten how to solve matrix equations. You forget it quickly when you don't use it.
How come you are so good at it?
Thanks a lot again
Black Zero
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Syed1
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Thank you so much for your help. Did not expect it this quickly
I am in Uni. I study structural engineering.
This equation came up while using stiffness method to solve reactions of a beam. I have long forgotten how to solve matrix equations. You forget it quickly when you don't use it.
How come you are so good at it?
Thanks a lot again
You are most welcome..
I don't know... I did mech engg and we used matrices quite extensively in system dynamics and higher order differential equations so it just stuck with me.
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