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walkthrough [2017/10/18 10:49]
marijn.nijenhuis [Node positions] 		walkthrough [2017/10/18 10:51]
marijn.nijenhuis [Element properties]
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            3 4];    %leafspring between node 3 and 4             3 4];    %leafspring between node 3 and 4 
 </code> </code>
- 
 ===== Node properties ===== ===== Node properties =====
 Node properties are defined by a structure array to assign properties to nodes, such as boundary conditions, applied loads, and inertia. The usage is ''nprops(i).field = value;'' to assign property ''field'' with value ''value'' to node ''i''. For a full syntax list with all possible inputs, see [[full_syntax#3. Node properties|SPACAR Light syntax]]. Node properties are defined by a structure array to assign properties to nodes, such as boundary conditions, applied loads, and inertia. The usage is ''nprops(i).field = value;'' to assign property ''field'' with value ''value'' to node ''i''. For a full syntax list with all possible inputs, see [[full_syntax#3. Node properties|SPACAR Light syntax]].
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 Furthermore, we would like for the parallel flexure guide to start 10mm deflected to the left and let it move 20mm to the right. For this purpose, we pre-describe the position of node 2 in x-direction: Furthermore, we would like for the parallel flexure guide to start 10mm deflected to the left and let it move 20mm to the right. For this purpose, we pre-describe the position of node 2 in x-direction:
 <code matlab> <code matlab>
-nprops(2).displ_initial_x =-0.01; %start with node 2 displaced 10mm to the left +nprops(2).displ_initial_x =-0.01; %start with node 2 displaced 10 mm to the left 
-nprops(2).displ_x =         0.02; %displace node 2 20mm to the right+nprops(2).displ_x =         0.02; %displace node 2 20 mm to the right
 </code> </code>
 At last we apply a load of 5N in Z-direction on node 2 and 3 At last we apply a load of 5N in Z-direction on node 2 and 3
 <code matlab> <code matlab>
-nprops(2).force_initial = [0 0 5]; %initial load of 5N i z-direction  +nprops(2).force_initial = [0 0 5]; %initial load of 5N in z-direction on node 2 
-nprops(3).force_initial = [0 0 5]; %initial load of 5N i z-direction +nprops(3).force_initial = [0 0 5]; %initial load of 5N in z-direction on node 3
 </code> </code>
  
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 <code matlab> <code matlab>
 %% ELEMENT PROPERTIES %% ELEMENT PROPERTIES
- 
 %first element property set %first element property set
-eprops(1).elems = [1 3];        %assing property set 1 to element 1 and 3+eprops(1).elems = [1 3];        %assing property set 1 to elements 1 and 3
 eprops(1).emod = 210e9;         %E-modulus [Pa] eprops(1).emod = 210e9;         %E-modulus [Pa]
-eprops(1).smod = 70e9;          %G-modulus [Pa]+eprops(1).smod = 70e9;          %shear modulus [Pa]
 eprops(1).dens = 7800;          %density   [kg/m^3] eprops(1).dens = 7800;          %density   [kg/m^3]
-eprops(1).dim = [0.05 0.0005];  %cross-sectional dimension [w t] in [m] +eprops(1).dim = [0.05 0.0005];  %cross-sectional dimension (width and thickness, resp.) [m] 
-eprops(1).cshape = 'rect';      %cross-sectional shape rectangular +eprops(1).cshape = 'rect';      %rectangular cross-sectional shape  
-eprops(1).flex = [2 3 4];       %torsional (2) and out-of-plane bending (3,4) deformations are flexible+eprops(1).flex = [2 3 4];       %flexible deformations: torsion (2) and out-of-plane bending (3,4) 
 eprops(1).orien = [0 0 1];      %width-direction of leafspring oriented in z-direction eprops(1).orien = [0 0 1];      %width-direction of leafspring oriented in z-direction
-%eprops(1).nbeams = 2;           %Leafspring simulated with 2 SPACAR beams (instead of 1) for increased accuracy+eprops(1).color = [0.8549    0.8588    0.8667]; %color in rgb values between 0 and 1
 </code> </code>
  
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 eprops(2).elems = [2];          %assing property set 2 to element 2 eprops(2).elems = [2];          %assing property set 2 to element 2
 eprops(2).dens = 2700;          %density   [kg/m^3] eprops(2).dens = 2700;          %density   [kg/m^3]
-eprops(2).dim = [0.05 0.025];   %cross-sectional dimension [w t] in [m] +eprops(2).dim = [0.05 0.025];   %cross-sectional dimension (width and thickness, resp.) [m] 
-eprops(2).cshape = 'rect';      %cross-sectional shape rectangular+eprops(2).cshape = 'rect';      %rectangular cross-sectional shape
 eprops(2).orien = [0 0 1];      %width-direction of leafspring oriented in z-direction eprops(2).orien = [0 0 1];      %width-direction of leafspring oriented in z-direction
 +eprops(2).color = [0.1686    0.3922    0.6627]; %color in rgb values between 0 and 1
 </code> </code>
- 
  
 ====== Run simulation ====== ====== Run simulation ======
walkthrough.txt · Last modified: 2017/10/18 10:51 by marijn.nijenhuis

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