# Spring

## How to model fastener with same force-displacement behavior for all translational directions in a plane in Abaqus?

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<p>Hi everyone. I want to model the fasteners connecting a wood sheathing to a steel frame in Abaqus. I want to input the same force-displacement behavior for all translational directions in the plane of the sheathing (like a radial spring). <br /> <br /> I was using spring element type Spring2 (nonlinear) but I could define behavior in only 2 translational directions in the sheathing plane (X and Z). This made my model overly stiff after the elastic range. I read about the RADIAL-THRUST connector element but it does not seem to be the one.

## How to model fastener with same force-displacement behavior for all translational directions in a plane in Abaqus?

<p>Hi everyone. I want to model the fasteners connecting a wood sheathing to a steel frame in Abaqus. I want to input the same force-displacement behavior for all translational directions in the plane of the sheathing (like a radial spring). <br /> <br /> I was using spring element type Spring2 (nonlinear) but I could define behavior in only 2 translational directions in the sheathing plane (X and Z). This made my model overly stiff after the elastic range. I read about the RADIAL-THRUST connector element but it does not seem to be the one.

## rotation spring setting

Dear all, these days I use combin14 to simulate the boundary conditions. I use two types of springs to simulate support. One is linear displacement spring, the other one is rotational spring. When the spring is on the radial edges, the rotation is about radius direction. When the spring is on the circumferential direction, the rotation is about circumferential direction. So i translate all the nodes to local cylndrial coordinate system. When the spring constants are large enough, the simulation results do not meet well with the clamped boundary conditions.

## defining points in 3d, changing coordinates system ABAQUS script

i need to define my revolution points i.e. the circle by x.y.z. coordinates and i dont know how to do that.

if that is not possible please tell me how can i change the system to cyclindrical coordinates please.

i
have to draw a spring and for that i know the points in cylindrical
system. i cant define in 2d as for less than 90 degree it will not be in
xz or you know like that plane. it will also be helful to define plane
if i can.

## Solution for beam on elastic beam

Hi,

I am looking at some deformations in beams.  I have an elastic beam sleeping on another elastic beam and connected via springs that have two dimensional stiffness. Anybody knows how should I go for closed form solution of this beam and obtain deformations in springs??? I can model it in sap2000 or ABAQUS and solve it at there but I am now looking for only closed form solution... Besides, I am looking for deformations in spring caused by applied load. I have attached a sketch of my model. Any idea or comment will be highly appreciated.

Thank you for your comment,