遇到了多年沒見的人
,曾經每天習以為常碰面的人。
在這麼多人之中
一看到妳的側臉
當下的反應居然是躲開
隨之而來的心情複雜
捨不得
又再一次看妳遠去
.......我還沒有準備好
面對
======================================================================
屬於那時代的歌 ,我的心情。
2013年10月27日 星期日
2013年10月23日 星期三
Ansys Workbench&Solidworks Simulation Von-Mises Stress 之分析誤差
分別用Ansys Workbench & Solidworks Simulation分析一mm立方體,材料為鋁合金
立方體底部固定(Fixed support),施以一向右力
Mass = 2.77e-6kg
Volume = 1 mm^3
Density = 2700 kg/m^3
Yield strengh = 55.2MPa
Relevance = 100 (網格最細)
Nodes = 30800
Elements = 6859
------------------------------------------------------------------------------------------------------
材料降伏應力為55MPa,所以當在每平方mm面積上,施以超過55MPa之力,會使材料產生永久破壞。
=====================================================================
Ansys Workbench 分析:
Case 1
Force = 1N
Results: Von-Mises Stress ,Max: 8.6599MPa ,Min:1.7483e-3MPa
Total deformation , Max:5.2048e-5mm,Min:0mm
---------------------------------------------------------------------------------------------------------
Case 2
Force = 25N
Results: Von-Mises Stress ,Max: 216.5MPa ,Min:4.3708e-2MPa
Total deformation , Max:1.3012e-3mm,Min:0mm
---------------------------------------------------------------------------------------------------------
Case 3
Force = 50N
Results: Von-Mises Stress ,Max: 432.99MPa ,Min:8.7416e-2MPa
Total deformation , Max:2.6024e-3mm,Min:0mm
---------------------------------------------------------------------------------------------------------
Case 4
Force = 60N
Results: Von-Mises Stress ,Max: 519.59MPa ,Min:0.1049MPa
Total deformation , Max:3.1229e-3mm,Min:0mm
=======================================================================
Solidworks Simulation 分析
Case 1
Force = 1N
Results: Von-Mises Stress ,Max: 8.018MPa ,Min:1346.8Pa
Displacement , Max:5.316e-5mm,Min:1e-3mm
Force = 25N
Results: Von-Mises Stress ,Max: 200MPa ,Min:33669.3Pa
Displacement , Max:1.34e-3mm,Min:1e-3mm
Force = 50N
Results: Von-Mises Stress ,Max: 400MPa ,Min:67338.6Pa
Displacement , Max:2.68e-3mm,Min:1e-3mm
Force = 60N
Results: Von-Mises Stress ,Max: 481MPa ,Min:80806.4Pa
Displacement , Max:3.217e-3mm,Min:1e-3mm
--------------------------------------------
Stress/max| Ansys |Solidworks|誤差 |
Case1 |8.6599 | 8.018 |1.08 |
Case2 |216.5 | 200 |1.0825 |
Case3 |432.99 | 400 |1.082475 |
Case4 |519.59 | 481 |1.08022 |
--------------------------------------------
------------------------------------------------------
Dedormation/max| Ansys |Solidworks|誤差 |
Case1 |5.2048e-5 | 5.361e-5 |0.97 |
Case2 |1.3012e-3 | 1.34e-3 |0.971 |
Case3 |2.6024e-3 | 2.68e-3 |0.97104 |
Case4 |3.1229e-3 | 3.217e-3 |0.9707 |
-----------------------------------------------------
結論:Ansys Workbench&Solidworks Simulation Von-Mises Stress 之分析誤差,在網格設定都是最細的情況下,不管是應力或位移分析,誤差都相當小。
立方體底部固定(Fixed support),施以一向右力
Mass = 2.77e-6kg
Volume = 1 mm^3
Density = 2700 kg/m^3
Yield strengh = 55.2MPa
Relevance = 100 (網格最細)
Nodes = 30800
Elements = 6859
------------------------------------------------------------------------------------------------------
材料降伏應力為55MPa,所以當在每平方mm面積上,施以超過55MPa之力,會使材料產生永久破壞。
=====================================================================
Ansys Workbench 分析:
Case 1
Force = 1N
Results: Von-Mises Stress ,Max: 8.6599MPa ,Min:1.7483e-3MPa
Total deformation , Max:5.2048e-5mm,Min:0mm
---------------------------------------------------------------------------------------------------------
Case 2
Force = 25N
Results: Von-Mises Stress ,Max: 216.5MPa ,Min:4.3708e-2MPa
Total deformation , Max:1.3012e-3mm,Min:0mm
---------------------------------------------------------------------------------------------------------
Case 3
Force = 50N
Results: Von-Mises Stress ,Max: 432.99MPa ,Min:8.7416e-2MPa
Total deformation , Max:2.6024e-3mm,Min:0mm
---------------------------------------------------------------------------------------------------------
Case 4
Force = 60N
Results: Von-Mises Stress ,Max: 519.59MPa ,Min:0.1049MPa
Total deformation , Max:3.1229e-3mm,Min:0mm
=======================================================================
Solidworks Simulation 分析
Case 1
Force = 1N
Results: Von-Mises Stress ,Max: 8.018MPa ,Min:1346.8Pa
Displacement , Max:5.316e-5mm,Min:1e-3mm
---------------------------------------------------------------------------------------------------------
Case 2Force = 25N
Results: Von-Mises Stress ,Max: 200MPa ,Min:33669.3Pa
Displacement , Max:1.34e-3mm,Min:1e-3mm
---------------------------------------------------------------------------------------------------------
Case 3Force = 50N
Results: Von-Mises Stress ,Max: 400MPa ,Min:67338.6Pa
Displacement , Max:2.68e-3mm,Min:1e-3mm
---------------------------------------------------------------------------------------------------------
Case 4Force = 60N
Results: Von-Mises Stress ,Max: 481MPa ,Min:80806.4Pa
Displacement , Max:3.217e-3mm,Min:1e-3mm
=======================================================================
--------------------------------------------
Stress/max| Ansys |Solidworks|誤差 |
Case1 |8.6599 | 8.018 |1.08 |
Case2 |216.5 | 200 |1.0825 |
Case3 |432.99 | 400 |1.082475 |
Case4 |519.59 | 481 |1.08022 |
--------------------------------------------
------------------------------------------------------
Dedormation/max| Ansys |Solidworks|誤差 |
Case1 |5.2048e-5 | 5.361e-5 |0.97 |
Case2 |1.3012e-3 | 1.34e-3 |0.971 |
Case3 |2.6024e-3 | 2.68e-3 |0.97104 |
Case4 |3.1229e-3 | 3.217e-3 |0.9707 |
-----------------------------------------------------
結論:Ansys Workbench&Solidworks Simulation Von-Mises Stress 之分析誤差,在網格設定都是最細的情況下,不管是應力或位移分析,誤差都相當小。
2013年10月9日 星期三
PLC應用指令 MOV,資料傳送(筆記)
例:
X1
|---| |---------【 MOV K15 D0 】
| X2
|---| |---------【 MOV HF0 D0 】
| M8002
|---| |----------【MOV D0 K2Y0】
說明:
X1 ON,十進制K15傳到暫存器D0,
接著轉送輸出K2Y0(Y0~Y7),
此時Y0~Y3 ON,Y4~Y7 OFF.
X2 ON,十六進制HF0傳到暫存器D0,
接著轉送輸出K2Y0(Y0~Y7),
此時Y0~Y3 OFF,Y4~Y7 ON.
===============================================
K15 = 0000 1111
HF0 = 15x16+0x16^0= 240
=1111 0000
X1
|---| |---------【 MOV K15 D0 】
| X2
|---| |---------【 MOV HF0 D0 】
| M8002
|---| |----------【MOV D0 K2Y0】
說明:
X1 ON,十進制K15傳到暫存器D0,
接著轉送輸出K2Y0(Y0~Y7),
此時Y0~Y3 ON,Y4~Y7 OFF.
X2 ON,十六進制HF0傳到暫存器D0,
接著轉送輸出K2Y0(Y0~Y7),
此時Y0~Y3 OFF,Y4~Y7 ON.
===============================================
K15 = 0000 1111
HF0 = 15x16+0x16^0= 240
=1111 0000
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