doc:user:elements:specials:spring
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doc:user:elements:specials:spring [2013/07/09 16:00] – joris | doc:user:elements:specials:spring [2023/06/20 19:00] (current) – papeleux | ||
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+ | ====== Spring ====== | ||
+ | ===== Materials | ||
+ | A spring (linear or not, with or without failure criterion) is defined is the same way as volume materials: | ||
+ | |||
+ | materialno = materialset.define (number, type) | ||
+ | materialno = materialset(number) | ||
+ | materialno.put(param, | ||
+ | materialno.depend(param, | ||
+ | ... | ||
+ | |||
+ | |'' | ||
+ | |'' | ||
+ | |'' | ||
+ | |'' | ||
+ | |'' | ||
+ | |'' | ||
+ | |||
+ | ==== ConstantSpringMaterial ==== | ||
+ | |||
+ | === Description === | ||
+ | |||
+ | Linear spring | ||
+ | |||
+ | === Parameters === | ||
+ | ^ | ||
+ | | Stiffness| | ||
+ | | Damping coefficient | ||
+ | |||
+ | ==== NonLinearSpringMaterial ==== | ||
+ | |||
+ | === Description === | ||
+ | |||
+ | Nonlinear spring. | ||
+ | |||
+ | === Parameters === | ||
+ | ^ | ||
+ | | Amplitude of the associated **stiffness force** as a function of the elongation. This force is described by the associated '' | ||
+ | | Amplitude of the associated **damping force** as a function of the elongation rate. This force is described by the associated '' | ||
+ | |||
+ | Remarks : | ||
+ | |||
+ | * '' | ||
+ | * the dependency is written as : | ||
+ | '' | ||
+ | '' | ||
+ | |||
+ | | ||
+ | ==== BreakingSpringMaterial ==== | ||
+ | |||
+ | === Description === | ||
+ | |||
+ | Nonlinear spring with failure criterion. | ||
+ | |||
+ | === Parameters === | ||
+ | ^ | ||
+ | | Stiffness| | ||
+ | | Damping coefficient | ||
+ | | Maximal length of the spring. Above, failure appears and forces are equal to zero. This length can depend on time though '' | ||
+ | |||
+ | ===== Element===== | ||
+ | |||
+ | Once the [[# | ||
+ | |||
+ | prp = ElementProperties(typeEl) | ||
+ | prp.put(param1, | ||
+ | prp.depend(param1, | ||
+ | ... | ||
+ | |||
+ | where | ||
+ | |||
+ | |'' | ||
+ | |'' | ||
+ | |'' | ||
+ | |'' | ||
+ | |'' | ||
+ | |||
+ | ==== Spring[2|3]DElement === | ||
+ | |||
+ | Nonlinear spring element. Associates two nodes with a stiffness. No axisymmetric correction is implemented. They must be associated with a '' | ||
+ | |||
+ | === Parameters === | ||
+ | ^ | ||
+ | | '' | ||
+ | | '' | ||
+ | | '' | ||
+ | | '' | ||
+ | |||
+ | ===== Interaction ===== | ||
+ | |||
+ | Finally, once the '' | ||
+ | |||
+ | app = FieldApplicator(no) | ||
+ | app.push(gObject1) | ||
+ | app.push(gObject2) | ||
+ | ... | ||
+ | app.addProperty(prp) | ||
+ | interactionset.add(app) | ||
+ | |||
+ | or | ||
+ | |||
+ | app = interactionset.add(FieldApplicator(no)) #add returns a reference | ||
+ | app.push(gObject1) | ||
+ | app.push(gObject2) | ||
+ | ... | ||
+ | app.addProperty(prp) | ||
+ | | ||
+ | where | ||
+ | | '' | ||
+ | |'' | ||
+ | | '' |
doc/user/elements/specials/spring.txt · Last modified: 2023/06/20 19:00 by papeleux