Recent content by grecko94

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    Fortran Best 3D Animation Software for Numerical Simulation Data

    hello everyone, I`m trying to make 3d animation from numerical simulation data. Can someone recommend good software for me Thanks in advance
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    I Hertzian contact theory on sin and cosine plane

    its settled then ! thank you :smile:
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    I Hertzian contact theory on sin and cosine plane

    something like this, but the cos surface is elastic and the disk is solid object.
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    I Hertzian contact theory on sin and cosine plane

    so sorry, i forgot to add the figure
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    Fortran Simulating Contact Force in a Moving Dashpot System Using FORTRAN

    its fine, i already finished this quite long time ago :smile:
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    I Hertzian contact theory on sin and cosine plane

    Hello guys, i`m currently making simulation of 2 dimension rolling disk on elastic sin/cosine plane. I`m just wondering if the theory applicable.
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    Fortran Simulating Contact Force in a Moving Dashpot System Using FORTRAN

    Hey there, sorry when i said i already finished my program. But my teacher told me to find the error in this data. i`m just wondering do you know any method to calculate error in my program. Thank you in advance program dashpot implicit none integer,parameter :: N=30001,IN=300 integer :: i...
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    Fortran Simulating Contact Force in a Moving Dashpot System Using FORTRAN

    Thank you it going to help me a lot ! Btw just want to inform you, that i already fix the program and it really have beautiful output :smile:
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    Fortran Simulating Contact Force in a Moving Dashpot System Using FORTRAN

    YES SIR, i already did c>0 , and it does fulfill the condition for underdamped , overdamp and critical. If that the case, then i need to add something to my equation of motion. I will try again on Monday at school. By the way, I'm 4th year undergraduate student in japan and on my way to...
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    Fortran Simulating Contact Force in a Moving Dashpot System Using FORTRAN

    hmm... it does seem getting better, with or without damp. but hey, what do you think about the force? the ground exert a negative force at the hill and big positive force on the valley. should i add another condition?, so when the F value goes to negative it equal to zero
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    Fortran Simulating Contact Force in a Moving Dashpot System Using FORTRAN

    Sooo i assumed the time function is not correct ? not dt bu T(i) ?
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    Fortran Simulating Contact Force in a Moving Dashpot System Using FORTRAN

    alright, I'm going to take a look after i finish my part time job. but just one thing, in my program the expression for Ω is wb so Ω = 2* π * velocity of the vehicle(u)/ Distance(d) and i wrote wb = 2*π*U/d isn't the same thing?
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    Fortran Simulating Contact Force in a Moving Dashpot System Using FORTRAN

    Sorry, i try to look at my program and still don't get what you said. can you explain a little bit about it damn,i feel kinda stupid about it now :H
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    Fortran Simulating Contact Force in a Moving Dashpot System Using FORTRAN

    The damping work fine by following damping ratio rule ζ=C/Cc, Cc = 2√km program dashpot implicit none integer,parameter :: N=10001,IN=300 integer :: i real :: pi,dt,k,m,c,U,d,wb,am real,dimension (N)::T,V,X,f !initial condition= position,velocity,time, pi pi = 3.14159265359 dt =...
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    Fortran Simulating Contact Force in a Moving Dashpot System Using FORTRAN

    because F = -K(Y-Yo) -C(y°-yo°) Y is the displacement of the spring which in my program is x Yo is the wavy surface profile and since Yo = A sin(Ωt) then the code am*sin(wb*dt) and yo° = ΩA cos(Ωt) and the code wb*am*cos(wb*dt)) Ω= wb U= car velocity dt = time you are right, i don't...
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