有限元法基礎(chǔ)講稿-第6講新-連接板建模實(shí)例

連接板建模實(shí)例問(wèn)題描述:模型如圖3-6所示。兩個(gè)圓孔的半徑和倒角的半徑都是0.4m，兩個(gè)半圓的半徑都是1.0m，板厚為0.5m。（注意：只要各量采用統(tǒng)一的單位制度，有單位與否，不影響計(jì)算結(jié)果。）圖3-6連接板模型示意圖連接板建模實(shí)例MainMenu>Preprocessor>Modeling>Create>Areas>Rectangle>ByDimensions輸入如下數(shù)值(僅作參考)：“Xl=0，X2=6，Y1=-1，Y2=1”，單擊。輸入第二個(gè)矩形的坐標(biāo)數(shù)值：“Xl=4，X2=6，Y1=-1，Y2=-3”，單擊關(guān)閉該對(duì)話框。3.4.1自底向上建模連接板建模實(shí)例圖3-8【PlotNumberingControls】對(duì)話框

UtilityMenu>PlotCtrls>Numbering連接板建模實(shí)例UtilityMenu>PlotCtrls>PanZoomRotateUtilityMenu>WorkPlane>DisplayWorkingPlaneUtilityMenu>WorkPlane>WPSettingsMainMenu>Preprocessor>Modeling>Create>Areas>Circle>SolidCircle:創(chuàng)建圓心為(0，0)半徑為1的圓。圖3-10工作平面設(shè)置圖3-11創(chuàng)建實(shí)心圓連接板建模實(shí)例圖3-12【OffsetWPtoKeypoints】對(duì)話框UtilityMenu>WorkPlane>OffsetWPto>Keypoints

將鼠標(biāo)移動(dòng)到圖形界面上，分別選取右側(cè)矩形的左右兩個(gè)點(diǎn)作為關(guān)鍵點(diǎn)(Keypoints)。然后，單擊圖3-12上面的按鈕，則工作平面(極坐標(biāo))移動(dòng)到了以所取關(guān)鍵點(diǎn)連線的中點(diǎn)為原點(diǎn)的平面上。連接板建模實(shí)例MainMenu>Preprocessor>Modeling>Create>Areas>Circle>SolidCircleMainMenu>Preprocessor>Modeling>Operate>Booleans>Add>Areas圖3-13【AddAeras】對(duì)話框圖3-14顯示直線編號(hào)連接板建模實(shí)例圖3-15在關(guān)鍵點(diǎn)之間填充線UtilityMenu>WorkPlane>DisplayWorkingPlane。該命令用來(lái)關(guān)閉展示工作平面。MainMenu>Preprocessor>Modeling>Create>Lines>LineFillet

連接板建模實(shí)例圖3-16放大圖形UtilityMenu>Plot>Lines，UtilityMenu>PlotCtrls>PanZoomRotate。單擊按鈕(該命令用于放大所選擇的圖元)。將鼠標(biāo)移到要打補(bǔ)丁的區(qū)域，按左鍵不放，移動(dòng)鼠標(biāo)并再次單擊，得到放大的三條線圖形連接板建模實(shí)例圖3-17進(jìn)行布爾加運(yùn)算后的結(jié)果MainMenu>Preprocessor>Modeling>Operate>Booleans>Add>Areas連接板建模實(shí)例UtilityMenu>WorkPlane>DisplayWorkingPlaneMainMenu>Preprocessor>Modeling>Create>Areas>Circle>SolidCircle:圓心在(0，0)，半徑為0.4的小圓孔

圖3-18繪制1個(gè)實(shí)心圓連接板建模實(shí)例UtilityMenu>WorkPlane>OffsetWPto>GlobalOriginMainMenu>Preprocessor>Modeling>Create>Areas>Circle>SolidCircle:圓心在(0，0)，半徑為0.4的小圓孔圖3-19繪制2個(gè)實(shí)心圓連接板建模實(shí)例UtilityMenu>WorkPlane>DisplayWorkingPla