RU2006105269A - METHOD FOR DETERMINING BOUNDARY CONDITIONS AND CRITERIA FOR FORMING METAL DETAILS - Google Patents
METHOD FOR DETERMINING BOUNDARY CONDITIONS AND CRITERIA FOR FORMING METAL DETAILS Download PDFInfo
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- RU2006105269A RU2006105269A RU2006105269/02A RU2006105269A RU2006105269A RU 2006105269 A RU2006105269 A RU 2006105269A RU 2006105269/02 A RU2006105269/02 A RU 2006105269/02A RU 2006105269 A RU2006105269 A RU 2006105269A RU 2006105269 A RU2006105269 A RU 2006105269A
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
1. Способ определения граничных условий и критериев формообразования металлических деталей, включающий силовое упругопластическое воздействие на образец материала заготовки и построение эпюры деформаций, при котором образец подвергается стандартным испытаниям на изгиб и растяжение, а величину максимально возможной деформации материала заготовки определяют по величине суммарной деформации, включающей деформацию от создания условно-цилиндрической кривизны с наибольшим относительным радиусом и деформацию, составляющую половину наибольшего утонения заготовки, увеличенную на значение превышения интенсивности деформации, при этом максимально допустимая суммарная деформация принимается равной минимальному значению равномерного относительного удлинения материала, определенному соотношением из стандартных испытаний на растяжение пятикратных образцов, отличающийся тем, что в величине суммарной деформации при определении минимально-допустимых радиусов гибки учитывают упругую составляющую, определяемую соотношением,где m - относительный изгибающий момент, зависящий от радиуса изгиба заготовки марки материала и схемы деформирования с учетом действия контактных напряжений;- наибольший радиус пластического изгиба, при котором напряжения достигают предела текучести материала заготовки детали, а σи Е - это соответственно предел текучести и модуль упругости материала заготовки.2. Способ по п.1, отличающийся тем, что в величине суммарной деформации, в случае превышения равномерного относительного удлинения, учитывают локализацию деформации, происходящую по закону нормального распределения, при эт1. A method for determining the boundary conditions and criteria for the shaping of metal parts, including the force of elastic-plastic impact on the sample of the workpiece material and the construction of the strain diagram, in which the sample is subjected to standard bending and tensile tests, and the maximum possible strain of the workpiece material is determined by the total strain, including deformation from the creation of conditionally cylindrical curvature with the largest relative radius and a deformation of half the most greater thinning of the workpiece, increased by a value exceeding the strain rate, while the maximum allowable total strain is taken to be the minimum value of the uniform uniform elongation of the material, determined by the ratio of standard tensile tests of five-fold samples, characterized in that in the total strain in determining the minimum allowable radii bending take into account the elastic component, determined by the ratio, where m is the relative bending moment, depends outwards from the bending radius of the workpiece material, and deformation marks circuit with the action of contact pressure, - the largest radius of plastic bending, at which the stresses reach the yield limit of the blank material parts, and v and E - are respectively the yield strength and modulus zagotovki.2 material. The method according to claim 1, characterized in that in the magnitude of the total deformation, in case of exceeding the uniform elongation, take into account the localization of deformation, which occurs according to the law of normal distribution, at
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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RU2006105269/02A RU2336135C2 (en) | 2006-02-20 | 2006-02-20 | Method of determination of boundary conditions and criteria of metal parts molding |
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RU2006105269/02A RU2336135C2 (en) | 2006-02-20 | 2006-02-20 | Method of determination of boundary conditions and criteria of metal parts molding |
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RU2006105269A true RU2006105269A (en) | 2007-09-20 |
RU2336135C2 RU2336135C2 (en) | 2008-10-20 |
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RU2006105269/02A RU2336135C2 (en) | 2006-02-20 | 2006-02-20 | Method of determination of boundary conditions and criteria of metal parts molding |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2950178B1 (en) * | 2009-09-14 | 2021-10-22 | Airbus Operations Sas | STRUCTURAL ANALYSIS PROCESS OF PANELS IN ISOTROPIC MATERIAL OF THE RAIDIS TYPE BY TRIANGULAR POCKETS |
RU2748138C1 (en) * | 2020-07-02 | 2021-05-19 | Федеральное государственное бюджетное учреждение науки Институт металлургии и материаловедения им. А.А. Байкова Российской академии наук (ИМЕТ РАН) | Method for predicting the destruction of workpieces in metal pressure treatment processes |
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- 2006-02-20 RU RU2006105269/02A patent/RU2336135C2/en not_active IP Right Cessation
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RU2336135C2 (en) | 2008-10-20 |
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Effective date: 20080221 |