基于ANSYSLS-DYNA的轿车车门碰撞仿真模拟和基于Android益智拼图游戏设计（附源代码）

基于ANSYS/LS-DYNA的轿车车门碰撞仿真模拟摘要碰撞问题属于冲击动力学的研究范畴，其过程具有高速、高温、高压等基本特性。因为加载速率高、变形大、接触物体间的侵彻贯入作用，在高速碰撞过程中材料内呈现明显的应变率及绝热温升效应，甚至发生相变。高速汽车碰撞对车身结构带来的破坏一直受到交通部门的关注，数值模拟因其经济性和高效性日益成为碰撞问题的重要研究手段。它可以节省试验的巨大投入，方便地描述和动态显示问题的整个过程。本文运用ANSYS/LS-DYNA对汽车车门被撞进行了动力学仿真，讨论了多种速度和碰撞角度情形下轿车门被碰撞的情况，对仿真中的各种情况进行的初步分析并对车门设计提出了一些直观建议。关键词：有限元方法；ANSYS/LS-DYNA；碰撞仿真AbstractCollisionproblembelongstotheresearchareasofimpactdynamics,thebasiccharacteristicofitsprocessmeanstobehighspeed,highvoltageandhightemperature.Becauseoftheloadofhighspeed,largedeformation,effectofpenetrationbetweenobjects,materialshowsobviousstrainrateandadiabaticwithtemperaturerising,evenphasechangingintheprocessofhigh-speedcollision.Thathigh-speedcollisionbetweenautomobiledamagesthebodystructureisconcernedbythetrafficdepartmentsforalongtime.Numericalsimulationwiththecharacterofeconomyandefficiencybecomesmoreandmoreimportantresearchmethodforcollisionproblem.Inthispaper,avehiclewillruninadooratcertainspeedandangle,thatisbasedontheanalysisabilityofANSYS/LS-DYNA.Keywords:Finiteelementmethod;ANSYS/LS-DYNA;Collisionsimulation目录第1章．绪言…………1第2章．ANSYS/LS-DYNA简介………3第3章．问题描述与建模……………53.1分析过程规划…………………53.2建立几何模型…………………63.3划分有限元网格……………113.4建立PART……………………113.5定义接触信息………………123.6定义边界条件及约束………133.7定义保险杠的初始速度……133.8施加保险杠面载荷…………14第4章．求解………174.1求解设置……………………174.2输出关键字文件Collision.K……………184.3向LS-DYNA求解器递交求解………………19第5章．结果分析…………………215.1观察碰撞过程………………215.2观察车门内的等效应力分布………………225.3观察速度值改变后的碰撞结果……………245.4观察速度方向改变后的碰撞结果…………245.5小结…………27参考文献……………30附录拼图游戏主要代码：1）选择界面MainActivity代码packagecom.angelnet.jigsaw.view;importjava.util.ArrayList;importjava.util.HashMap;importjava.util.List;importjava.util.Map;importandroid.app.Activity;importandroid.app.AlertDialog;importandroid.app.Dialog;importandroid.content.DialogInterface;importandroid.content.Intent;importandroid.os.Bundle;importandroid.util.DisplayMetrics;importandroid.view.KeyEvent;importandroid.view.Menu;importandroid.view.MenuItem;importandroid.view.View;importandroid.widget.AdapterView;importandroid.widget.Button;importandroid.widget.GridView;importandroid.widget.SimpleAdapter;importandroid.widget.Spinner;importandroid.widget.AdapterView.OnItemClickListener;importandroid.widget.AdapterView.OnItemSelectedListener;importcom.angelnet.jigsaw.model.service.IMain;importcom.angelnet.jigsaw.model.service.MainImpl;publicclassMainActivityextendsActivity{ privateintscreenWidth=0;//屏幕的宽度privateintscreenHeight=0;//屏幕的高度privateSpinnerlevelSp;//等级 privateGridViewpictureGridView;//图片 privateButtonconfBtn; privatestaticfinalint[]pictureArray={R.drawable.pingtu_1_1,R.drawable.pingtu_2_2,R.drawable.pingtu_3_3,R.drawable.pingtu_4_4,R.drawable.pingtu_5_5,R.drawable.pingtu_6_6, R.drawable.pingtu_7_7,R.drawable.pingtu_8_8,R.drawable.pingtu_9_9}; privatestaticfinalintAUTHOR_INFO_ID=Menu.FIRST;//作者简介 privatestaticfinalintABOUT_ID=Menu.FIRST+1;//关于 privatestaticfinalintEXIT_ID=Menu.FIRST+2;//退出 privateIMainiMain; privateintpictureIndex=0;@OverridepublicvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.main);initControls();showGridView();}privatevoidinitControls(){ iMain=newMainImpl(); levelSp=(Spinner)findViewById(R.id.main_level_spinner); pictureGridView=(GridView)findViewById(R.id.main_picture_gridView); pictureGridView.setOnItemClickListener(newItemClickListener());//监听 pictureGridView.setOnItemSelectedListener(newItemSelectedListener());//选择监听 levelSp.setAdapter(iMain.getLevelAdapter(this)); confBtn=(Button)findViewById(R.id.main_confirm_btn); confBtn.setOnClickListener(btnOnClickListener);}@Override publicbooleanonCreateOptionsMenu(Menumenu){ //TODOAuto-generatedmethodstub menu.add(0,AUTHOR_INFO_ID,0,R.string.author).setShortcut('1','i').setIcon(R.drawable.author_info); menu.add(0,ABOUT_ID,0,R.string.about).setShortcut('2','a').setIcon(R.drawable.about); menu.add(0,EXIT_ID,0,R.string.exit).setShortcut('4','e').setIcon(R.drawable.exit); returnsuper.onCreateOptionsMenu(menu); } @Override publicbooleanonOptionsItemSelected(MenuItemitem){ //TODOAuto-generatedmethodstub switch(item.getItemId()){ caseAUTHOR_INFO_ID:{ onCreateDialog(AUTHOR_INFO_DIALOG).show(); returntrue; } caseABOUT_ID:{ onCreateDialog(ABOUT_DIALOG).show(); returntrue; } caseEXIT_ID:{ exitApp(); returntrue; } } returnsuper.onContextItemSelected(item); } @Override publicbooleanonKeyDown(intkeyCode,KeyEventevent){ //TODOAuto-generatedmethodstub if(keyCode==KeyEvent.KEYCODE_BACK){ exitApp(); returntrue; } returnsuper.onKeyDown(keyCode,event); } privatestaticfinalintABOUT_DIALOG=1; privatestaticfinalintAUTHOR_INFO_DIALOG=2; @Override protectedDialogonCreateDialog(intid){ //TODOAuto-generatedmethodstub switch(id){ caseABOUT_DIALOG:{ AlertDialog.Builderbuilder=newAlertDialog.Builder(this); builder.setIcon(R.drawable.alert_dialog_icon); builder.setTitle(R.string.about); builder.setMessage(R.string.aboutInfo); builder.setPositiveButton(R.string.confirm, newDialogInterface.OnClickListener(){ publicvoidonClick(DialogInterfacedialog,intwhichButton){ } }); returnbuilder.create(); } caseAUTHOR_INFO_DIALOG:{ AlertDialog.Builderbuilder=newAlertDialog.Builder(this); builder.setIcon(R.drawable.alert_dialog_icon); builder.setTitle(R.string.author); builder.setMessage(R.string.authorInfo); builder.setPositiveButton(R.string.confirm, newDialogInterface.OnClickListener(){ publicvoidonClick(DialogInterfacedialog,intwhichButton){ } }); returnbuilder.create(); } } returnsuper.onCreateDialog(id); } /** *显示就九空格 */ privatevoidshowGridView(){ //获取屏幕大小 DisplayMetricsdm=newDisplayMetrics();dm=this.getApplicationContext().getResources().getDisplayMetrics();screenWidth=dm.widthPixels;screenHeight=dm.heightPixels;//两列之间的边距为10pictureGridView.setColumnWidth((screenWidth-10*4)/3); SimpleAdaptersaImageItems=newSimpleAdapter(this,getAllItemsForListView(), R.layout.grid_item, newString[]{"ImageView"}, newint[]{R.id.gridItem_imgView}); pictureGridView.setAdapter(saImageItems); pictureGridView.setSelector(R.drawable.menuitemshape); } publicList<Map<String,Object>>getAllItemsForListView(){ //TODOAuto-generatedmethodstub //生成动态数组，并且传入数据 List<Map<String,Object>>imageItem=newArrayList<Map<String,Object>>(); for(inti=0;i<pictureArray.length;i++){ HashMap<String,Object>tempMap=newHashMap<String,Object>();// Bitmapbitamp=BitmapFactory.decodeResource(this.getResources(),pictureArray[i]); tempMap.put("ImageView",pictureArray[i]);// imageItem.add(tempMap); } returnimageItem; }/** *当AdapterView被单击(触摸屏或者键盘)，则返回的Item单击事件 * */ privateclassItemClickListenerimplementsOnItemClickListener{ /** *@paramadapterView *TheAdapterViewwheretheclickhappened *@paramarg1 *TheviewwithintheAdapterViewthatwasclicked *@paramposition *Thepositionoftheviewintheadapter *@paramrowid *Therowidoftheitemthatwasclicked */ publicvoidonItemClick(AdapterView<?>adapterView, Viewview,intposition, longrowid){ //在本例中position=rowid pictureIndex=position; } } /** *选择监听 */ privateclassItemSelectedListenerimplementsOnItemSelectedListener{ @Override publicvoidonItemSelected(AdapterView<?>adapterView,Viewview,intposition, longrowid){ //TODOAuto-generatedmethodstub// HashMap<String,Object>item=(HashMap<String,Object>)adapterView.getItemAtPosition(position); pictureIndex=position; } @Override publicvoidonNothingSelected(AdapterView<?>arg0){ //TODOAuto-generatedmethodstub } } /** *退出应用程序 */ privatevoidexitApp(){ AlertDialog.Builderbuilder=newAlertDialog.Builder(MainActivity.this); builder.setIcon(R.drawable.question_dialog_icon); builder.setTitle("退出"); builder.setMessage("您确定要退出益智拼图吗？"); builder.setPositiveButton(R.string.confirm, newDialogInterface.OnClickListener(){ publicvoidonClick(DialogInterfacedialog,intwhichButton){ MainActivity.this.finish(); } }); builder.setNegativeButton("取消",newDialogInterface.OnClickListener(){ @Override publicvoidonClick(DialogInterfacedialog,intwhich){ } }); builder.create().show(); } privateView.OnClickListenerbtnOnClickListener=newView.OnClickListener(){ @Override publicvoidonClick(Viewv){ //TODOAuto-generatedmethodstub switch(v.getId()){ caseR.id.main_confirm_btn: Bundleextras=newBundle(); extras.putInt("level",levelSp.getSelectedItemPosition()); extras.putInt("pictureIndex",pictureIndex); Intentintent=newIntent(MainActivity.this,JigsawActivity.class); intent.putExtras(extras); startActivityForResult(intent,1); break; } } };}2）游戏界面JigsawActivity代码：packagecom.angelnet.jigsaw.view;importandroid.app.Activity;importandroid.graphics.Bitmap;importandroid.graphics.BitmapFactory;importandroid.os.Bundle;importandroid.os.Handler;importandroid.os.Message;importandroid.view.View;importandroid.widget.Button;importandroid.widget.ImageView;importandroid.widget.TextView;importcom.angelnet.jigsaw.model.widgets.JigsawView;publicclassJigsawActivityextendsActivity{ privateImageViewpreviewImgView; privateJigsawViewmJigsawView; privateTextViewlevelTV; privateTextViewstepNumTV; privateTextViewtimeTV; privateBitmapmBitmap; privateButtonstartBtn; privatebooleanisGaming=false; privatebooleanisFirstThread=false; privatebooleanisPlay=false; /** *第一次运行该Activity时，就要运行onCreate方法 **/ @Override protectedvoidonCreate(BundlesavedInstanceState){ //TODOAuto-generatedmethodstub super.onCreate(savedInstanceState); setContentView(R.layout.jigsaw); initControls(); } privatevoidinitControls(){ Bundleextras=this.getIntent().getExtras(); intlevel=extras.getInt("level"); intpictureIndex=extras.getInt("pictureIndex"); previewImgView=(ImageView)findViewById(R.id.jigsaw_preview_imgview); mJigsawView=(JigsawView)findViewById(R.id.main_JigsawView); if(0==pictureIndex){ mBitmap=BitmapFactory.decodeResource(getResources(),R.drawable.pingtu_1); }elseif(1==pictureIndex){ mBitmap=BitmapFactory.decodeResource(getResources(),R.drawable.pingtu_2); }elseif(2==pictureIndex){ mBitmap=BitmapFactory.decodeResource(getResources(),R.drawable.pingtu_3); }elseif(3==pictureIndex){ mBitmap=BitmapFactory.decodeResource(getResources(),R.drawable.pingtu_4); }elseif(4==pictureIndex){ mBitmap=BitmapFactory.decodeResource(getResources(),R.drawable.pingtu_5); }elseif(5==pictureIndex){ mBitmap=BitmapFactory.decodeResource(getResources(),R.drawable.pingtu_6); }elseif(6==pictureIndex){ mBitmap=BitmapFactory.decodeResource(getResources(),R.drawable.pingtu_7); }elseif(7==pictureIndex){ mBitmap=BitmapFactory.decodeResource(getResources(),R.drawable.pingtu_8); }elseif(8==pictureIndex){ mBitmap=BitmapFactory.decodeResource(getResources(),R.drawable.pingtu_9); } levelTV=(TextView)findViewById(R.id.jigsaw_level_tv); if(level==0){ mJigsawView.setRowCol(3,3); levelTV.setText("3X3"); }elseif(level==1){ mJigsawView.setRowCol(3,4); levelTV.setText("3X4"); }elseif(level==2){ mJigsawView.setRowCol(4,3); levelTV.setText("4X3"); }elseif(level==3){ mJigsawView.setRowCol(4,4); levelTV.setText("4X4"); } previewImgView.setImageBitmap(mBitmap); mJigsawView.setBitamp(mBitmap); stepNumTV=(TextView)findViewById(R.id.jigsaw_stepNum_tv); stepNumTV.setText(String.valueOf(mJigsawView.getStep())); timeTV=(TextView)findViewById(R.id.jigsaw_time_tv); timeTV.setText(timeParser(second)); startBtn=(Button)findViewById(R.id.jigsaw_start_btn); startBtn.setOnClickListener(newView.OnClickListener(){ @Override publicvoidonClick(Viewv){ //TODOAuto-generatedmethodstub //开始游戏 if(!isPlay){ isPlay=true; }else{ mJigsawView.setBitamp(mBitmap); } isGaming=true; second=0; mJigsawView.setStep(0); mJigsawView.setGameing(isGaming); startBtn.setText("REPLAY"); if(!isFirstThread){ isFirstThread=true; newThread(newGameRunable()).start(); } Messagemsg=newMessage(); msg.what=INIT_MESSAGE; mHandler.sendMessage(msg); } };} /** * *@paramtotalSecond *@return */ privateStringtimeParser(inttotalSecond){ StringBuffersb=newStringBuffer(); intminute=totalSecond/60; sb.append(minute); sb.append(":"); intsecond=totalSecond%60; if(second>=10) sb.append(second); else sb.append("0"+second); returnsb.toString(); } privateintsecond=0; classGameRunableimplementsRunnable{ publ