<
From version < 82.1 >
edited by Fredrik Lagerström
on 2020/03/27 06:35
To version < 83.1 >
edited by Fredrik Lagerström
on 2020/03/27 06:35
>
Change comment: There is no comment for this version

Summary

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129 129  * **Merge objects**
130 130  The program merges **fixed points**, **fixed lines**, **supports**, **beams**, **columns** and **walls** (only in the //Plate// module) to **plate** and/or **wall** regions (the border of the regions). It is decided randomly which objects will be let in their place or removed. The objects shorter than a merging //distance// will be deleted. The objects being at the same place (covering) and having same properties will be deleted except one.
131 131  \\The program also merges columns and/or beams together. It is decided randomly which line elements will be let in their place or removed. The bars shorter than the merging distance will be deleted. After that, the supports fit to the bars. The objects being at the same place (covering) and having same properties will be deleted except one.
132 -\\The program merges the loads to the geometry created in the first step. Those loads that have not been merged by the previous way will be merged together. It is decided randomly which ones will be let in their place or removed. Line loads shorter than the merging distance will be deleted. If the //Avoid load multiplication// option (see later) is active, the loads having the same position and same properties will be deleted except one.
133 - (((
132 +\\The program merges the loads to the geometry created in the first step. Those loads that have not been merged by the previous way will be merged together. It is decided randomly which ones will be let in their place or removed. Line loads shorter than the merging distance will be deleted. If the //Avoid load multiplication// option (see later) is active, the loads having the same position and same properties will be deleted except one.(((
134 134  |(% style="width:114px" %)[[image:warning.png]]|(% style="width:1336px" %)(((
135 135  The merge process may modify the original shape of the objects to a simpler geometry; but a simple figure cannot be changed for a more complicated one. For example the program does not fit a line load having straight action line to a curved edge although merging distance requires that.
136 136  
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137 137  This version of object merge cannot merge the plate or wall regions to themselves or to each other. The user has to pay attention to the correctness of these objects.
138 138  )))
139 139  
140 -
141 141  Using //Auto merge objects// (recommended) corrects structural object misplacements. If the option is inactive, geometric anomalies cause too long mesh generation process or generation failure.
142 142  \\Using //Inform about volume of merged objects// option together with object merge sends information about the quantity of corrections.
143 143  \\//Distance// sets the maximal investigation zone between elements, so if the objects are closer than the defined distance, they will be merged. The suggested distance value is 3 to 5cm for engineering problems.
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160 160  [[image:1585286330394-468.png]]
161 161  
162 162  * **Calculated average element size**
163 -By default, the program automatically calculates the optimal average size of the 2D finite elements considering the size, the geometry, the environment etc. of the structural elements. So, you do not need to give an initial value for it. The automatic calculation and the element size depend on the following settings options.
164 - (((
161 +By default, the program automatically calculates the optimal average size of the 2D finite elements considering the size, the geometry, the environment etc. of the structural elements. So, you do not need to give an initial value for it. The automatic calculation and the element size depend on the following settings options.(((
165 165  |(% style="width:114px" %)[[image:warning.png]]|(% style="width:1336px" %)(((
166 166  Element sizes can be set manually for all model regions or by regions with the **Average element size// //**command. If you modify the default “Automatic” value for a planar structural element (wall or plate) to a given value, the automatic element size calculation will be skipped for that region, and the given size will be used for that.
167 167  
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209 209  \\The //Overlap & cut// tool checks overlapping and intersecting finite elements, which can be caused for example by copying or moving regions together with their finite element meshes.
210 210  \\The //Topology & gap// tool checks the topology of the finite elements and finds possible gaps. A typical topological error, when for example a corner node of an element lies on a side edge of another element. This problem can easily arise manually by using the **Split** command incorrectly.
211 211  \\[[image:1585286665130-634.png]]
212 -Figure: Topologic errors (unconnected nodes)
213 - (((
209 +Figure: Topologic errors (unconnected nodes)(((
214 214  |(% style="width:114px" %)[[image:light.png]]|(% style="width:1336px" %)Topological errors can be easily solved by the **Rebuild** and **Smooth** commands and quick algorithms.
215 215  )))
216 216  
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304 304  \\[[image:1585286988123-269.png]]
305 305  Figure: Peak smoothing algorithm set for analysis calculations
306 306  
307 -1. The program calculates a constant value for cutting the peaks according to volume calculations of inner diagrams above the peak smoothing regions. That means, the volume at the final constant result value (//Volume (smooth)//) is equal with the volume derived from the peak (singularity) value (//Volume (peak)//) above the same peak smoothing region. Let’s see the next figure.
308 - (((
303 +1. The program calculates a constant value for cutting the peaks according to volume calculations of inner diagrams above the peak smoothing regions. That means, the volume at the final constant result value (//Volume (smooth)//) is equal with the volume derived from the peak (singularity) value (//Volume (peak)//) above the same peak smoothing region. Let’s see the next figure.(((
309 309  (% style="text-align:center" %)
310 310  [[image:1585287008134-672.png]]
311 311  
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324 324  Figure: Singularity of line reaction force solved by simple display technique
325 325  )))
326 326  
327 -
328 328  |(% style="width:114px" %)[[image:light.png]]|(% style="width:1336px" %)(((
329 329  It is important to select the correct peak smoothing method cause it has big effect to the results.
330 330  
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335 335  **~ **
336 336  )))
337 337  
338 -
339 -(% class="wikigeneratedid" %)
340 340  = Edit Functions =
341 341  
342 342  There are numerous tools in the [[image:1585287244359-722.png]] tabmenu allow you to edit the finite element mesh generated automatically.
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343 343  
344 344  A short summary of the edit functions:
345 345  
346 -* adding additional nodes to the mesh (**Fixed point**),
338 +* adding additional nodes to the mesh ([[**Fixed point**>>||anchor="HAddingnodestomesh"]]),
347 347  * fixing lines inside the mesh (**Fixed line**),
348 348  * editing peak smoothing regions or definition of new ones (**Peak smoothing region**),
349 349  * fixing the node numbers on fixed lines (**Division number**),
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