共查询到19条相似文献,搜索用时 656 毫秒
1.
THEEXACTSOLUTIONSOFELASTIC-PLASTICCRACKLINEFIELDFORMODEⅡPLANESTRESSCRACKYiZhijian(易志坚)WangShijie(王士杰)WangXiangjian(王向坚)(Recei... 相似文献
2.
NEAR CRACK LINE ELASTIC-PLASTIC ANALYSIS FOR A CRACK LOADED BY ANTIPLANE POINT FORCESWuChengping(吴承平);WangCheng(王成)(ReceivedS... 相似文献
3.
EXACT SOLUTIONS OF NEAR CRACK LINE FIELDS FOR MODE I CRACK UNDER PLANE STRESS CONDITION IN AN ELASTIC-PERFECTLY PLASTIC SOLID 总被引:1,自引:1,他引:1
EXACTSOLUTIONSOFNEARCRACKLINEFIELDSFORMODEICRACKUNDERPLANESTRESSCONDITIONINANELASTIC-PERFECTLYPLASTICSOLIDEXACTSOLUTIONSOFNEA... 相似文献
4.
刘汉池 《应用数学和力学(英文版)》1995,(8)
STRESS-STBAINFIELDNEARCRACKTIPANDCALCULATIONOFCRITICALSTRESSOFCRACKPROPAGATIONINAPUREBENDINGBEAMOFRECTANGULARSECTIONWITHONE-S... 相似文献
5.
POSTBUCKLINGBEHAViOROFRECTANGULARMODERATELYTHICKPLATESANDSANDWICHPLATESChengZhen-qiang(成振强)WangXiu-xi(王秀喜)HuangMao-guang(黄茂光)... 相似文献
6.
林拜松 《应用数学和力学(英文版)》1995,16(11):1105-1115
ASUPPLEMENTARYSTUDYOFANISOTROPICPLASTICFIELDSATARAPIDLYPROPAGATINGPLANE-STRESSCRACK-TIP(I)LinBaisong(林拜松)(ReceivedJuly15.1994... 相似文献
7.
郭兴明 《应用数学和力学(英文版)》1996,17(5):445-450
CHARACTERISTICSOFSUBDIFFERENTIALSOFFUNCTIONS(郭兴明)CHARACTERISTICSOFSUBDIFFERENTIALSOFFUNCTIONS¥GuoXingming(ReceivedJune16,1995... 相似文献
8.
ENDOCHRONICANALYSISFORCOMPRESSIVEBUCKLINGOFTHIN-WALLEDCYLINDERSINYIELDREGIONPengXianghe(彭向和)ChenYuanqiang(陈元强)ZengXiangguo(曾祥... 相似文献
9.
ANALYTICALSOLUTIONOFRADIATEDSOUNDPRESSUREOFRING-STIFFENEDCYLINDRICALSHELLSINFLUIDMEDIUMXieGuanmo(谢官员模)LuoDongping(骆东平)(Receiv... 相似文献
10.
THEEXISTENCEOFPERIODICSOLUTIONSFORACLASSOFFUNCTIONALDIFFERENTIALEQUATIONSANDTHEIRAPPLICATIONZhaoJie-min(赵杰民);HuangKe-lei(黄克累)... 相似文献
11.
General forms of elastic-plastic matching equations for mode-Ⅲ cracks near crack line 总被引:1,自引:1,他引:0
Crack line analysis is an effective way to solve elastic-plastic crack problems. Application of the method does not need the traditional small-scale yielding conditions and can obtain sufficiently accurate solutions near the crack line. To address mode- Ⅲ crack problems under the perfect elastic-plastic condition, matching procedures of the crack line analysis method axe summarized and refined to give general forms and formulation steps of plastic field, elastic-plastic boundary, and elastic-plastic matching equations near the crack line. The research unifies mode-III crack problems under different conditions into a problem of determining four integral constants with four matching equations. An example is given to verify correctness, conciseness, and generality of the procedure. 相似文献
12.
THE PRECISE AND NEW ANALYSIS FOR A MODE Ⅲ GROWING CRACK IN AN ELASTIC-PERFECTLY PLASTIC SOLID 总被引:2,自引:2,他引:0
易志坚 《应用数学和力学(英文版)》1993,14(4):345-352
The near crack line field analysis method has been used to investigate into ModeⅢ quasistatically propagating crack in an elastic-perfectly plastic material.Thesignificance of this paper is that the usual small scale yielding theory has been brokenthrough.By obtaining the general solutions of the stresses and the displacement rate ofthe near crack line plastic region,and by matching the general solutions with theprecise elastic fields(not the usual elastic K-dominant fields)at the elastic-plasticboundary,the precise and new solutions of the stress and deformation fields,the sizeof the plastic region and the unit normal vector of the elastic-plastic boundary havebeen obtained near the crack line.The solutions of this paper are sufficiently precisenear the crack line region because the roughly qualitative assumptions of the smallscale yielding theory have not been used and no other roughly qualitative assumptionshave been taken,either.The analysis of this paper shows that the assumingly“steady-state cas 相似文献
13.
Crack line analysis is an effective way to solve elastic-plastic crack problems.Application of the method does not need the traditional small-scale yielding conditions and can obtain sufficiently accurate solutions near the crack line. To address mode-Ⅲ crack problems under the perfect elastic-plastic condition,matching procedures of the crack line analysis method are summarized and refined to give general forms and formulation steps of plastic field,elastic-plastic boundary,and elastic-plastic matching equations near the crack line. The research unifies mode-Ⅲ crack problems under different conditions into a problem of determining four integral constants with four matching equations.An example is given to verify correctness,conciseness,and generality of the procedure. 相似文献
14.
The strain energy density theory and the near crack line analysis method are applied to investigate an eccentric crack loaded by two pairs of tensile point forces in a finite plate. The minimum values of SED in the vicinity of the crack tip are determined, the initial growth orientation of crack are determined. Obtained is the elastic-plastic solution near the crack line of an eccentric crack loaded by two pairs of point tensile forces under large scale yielding condition. More specifically, the near field solution contains the unit normal vector of the elastic-plastic boundary and the elastic-plastic stress field. The length of the plastic zone along the crack line is found to vary with the external load and the bearing capacity of a finite plate with an eccentric crack loaded by two pairs of tensile point forces. Compared with small scale yielding condition, the normalized load obtained is higher than those under small scale yielding condition when the length of the plastic zone is the same. 相似文献
15.
The elastic-plastic stress distribution and the elastic-plastic boundary con- figuration near a crack surface region are significant but hard to obtain by means of the conventional analysis. A crack line analysis method is developed in this paper by consid- ering the crack surface as an extension of the crack line. The stresses in the plastic zone, the length, and the unit normal vector of the elastic-plastic boundary near a crack surface region are obtained for an antiplane crack in an elastic-perfectly plastic solid. The usual small scale yielding assumptions are not needed in the analysis. 相似文献
16.
17.
GENERAL FORM OF MATCHING EQUATION OF ELASTIC-PLASTIC FIELD NEAR CRACK LINE FOR MODEⅠCRACK UNDER PLANE STRESS CONDITION 总被引:2,自引:0,他引:2
Crack line field analysis method has become an independent method for crack elastic-plastic analysis, which greatly simplifies the complexity of crack elastic-plastic problems and overcomes the corresponding mathematical difficulty. With this method, the precise elastic-plastic solutions near crack lines for variety of crack problems can be obtained. But up to now all solutions obtained by this method were for different concrete problems, no general steps and no general form of matching equations near crack line are given out. With crack line analysis method, this paper proposes the general steps of elastic-plastic analysis near crack line for mode Ⅰ crack in elastic-perfectly plastic solids under plane stress condition, and in turn given out the solving process and result for a specific problem. 相似文献
18.
C. Guo X.P. Zhou Y.X. Zhang H.Q. Yang X.H. Li 《Theoretical and Applied Fracture Mechanics》2009,51(3):174-180
The near crack line analysis method is used to investigate an eccentric crack loaded by shear forces in a finite width plate, and the analytical solution is obtained in this paper. The solution includes: the unit normal vector of the elastic–plastic boundary near the crack line, the elastic–plastic stress fields near crack line, variations of the length of the plastic zone along the crack line with an external loads, and the bearing capacity of a finite plate with a centric crack loaded by shear stress in the far field. The results obtained in this paper are sufficiently precise near the crack line because the assumptions of small scale yielding theory have not been made and no other assumptions have been taken. Subsequently, the present results are compared with the traditional line elastic fracture mechanical solutions and elastoplastic near field solutions under small scale yielding condition. On the basis of the minimum strain energy density (SED) theory, the minimum values of SED in the vicinity of the crack tip are determined, the initial growth orientation of crack are determined. It is found that the normalized load under large scale yielding condition is higher than those under small scale yielding condition when the length of the plastic zone is the same. 相似文献
19.
I.IntroductionThenearcracklineanalysismethodhasbeengreatlyimprovedbyYill'2].In[l,21,theimprovednearcracklineanalysismethodhasbeenusedtoinvestigateamodeIllcrackinanelastic-perfectlyplasticsolid.Andthesmallscaleyieldingconditionshavebeencompletelyabandoned,andcompletelynewandprecisesolutionsoftheelastic-plasticfieldsofamodeillstationarycrackandamodelillquasi-staticallygrowingcrackwithremotealltiplaneshearinginanelastic-perfectlyplastic'materialhavebeenobtained,respectively.In[3]weanalyzedthene… 相似文献