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linear_spring_damper_force.h
1 /* Copyright (C) 2004-2009 MBSim Development Team
2  *
3  * This library is free software; you can redistribute it and/or
4  * modify it under the terms of the GNU Lesser General Public
5  * License as published by the Free Software Foundation; either
6  * version 2.1 of the License, or (at your option) any later version.
7  *
8  * This library is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11  * Lesser General Public License for more details.
12  *
13  * You should have received a copy of the GNU Lesser General Public
14  * License along with this library; if not, write to the Free Software
15  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
16  *
17  * Contact: markus.ms.schneider@gmail.com
18  */
19 
20 #ifndef _LINEAR_SPRING_DAMPER_FORCE_H_
21 #define _LINEAR_SPRING_DAMPER_FORCE_H_
22 
23 #include "mbsim/functions/function.h"
24 
25 namespace MBSim {
26 
32  class LinearSpringDamperForce : public Function<double(double,double)> {
33  public:
38 
44  LinearSpringDamperForce(double c_, double d_) : c(c_), d(d_) {}
45 
46  /* INHERITED INTERFACE OF FUNCTION2 */
47  virtual double operator()(const double& s, const double& sd) { return c*s + d*sd; }
48  void initializeUsingXML(xercesc::DOMElement *element);
49  /***************************************************/
50 
51  /* GETTER / SETTER */
52  void setStiffnessCoefficient(double c_) { c=c_; }
53  void setDampingCoefficient(double d_) { d=d_; }
54  /***************************************************/
55 
56  protected:
60  double c, d;
61  };
62 
63 }
64 
65 #endif
LinearSpringDamperForce()
constructor
Definition: linear_spring_damper_force.h:37
LinearSpringDamperForce(double c_, double d_)
constructor
Definition: linear_spring_damper_force.h:44
function describing a linear relationship between the input deflection / relative velocity and the ou...
Definition: linear_spring_damper_force.h:32
Definition: planar_contour.h:31
double c
stiffness, damping, undeformed length
Definition: linear_spring_damper_force.h:60

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