项目来源
俄罗斯科学基金(RSF)
项目主持人
Bormotin Konstantin
项目受资助机构
Federal State-financed Educational Institution of Higher Learning"Komsomolsk-na-Amure State University
项目编号
25-29-00332
立项年度
2025
立项时间
未公开
研究期限
未知 / 未知
项目级别
国家级
受资助金额
未知
学科
ENGINEERING SCIENCES-Mechanics of technological process
学科代码
09-09-102
基金类别
未公开
обратные задачи формообразования ; вариационные принципы ; итерационный метод ; метод конечных элементов ; программы инженерного анализа ; оптимальное управление ; контактные условия ; пластичность ; большие деформации ; остаточная конфигурация ; Inverse forming problems ; variational principles ; iterative method ; finite element method ; Computer-aided engineering ; optimal control ; contact conditions ; plasticity ; creep ; large deformations ; residual configuration
参与者
未公开
参与机构
未公开
项目标书摘要：nnotation:The project is aimed at developing methods for establishing an effective technological process for shaping and assembling thin-walled structures.Modern equipment that aircraft manufacturing enterprises are equipped It has computer numerical control(CNC),in particular stretch presses.The accuracy of the resulting part shape will depend on the accuracy of the calculated and manufactured tooling shape,which specifies the predictive shape of the panel,and the deformation trajectory of the sheet blank.Prediction of the load that forms the geometry of the workpiece during deformation and determination of optimal process conditions is possible using numerical methods taking into account the analysis of full-size theoretical models.The novelty of the project task lies in the development of a quality criterion and a numerical optimization method for shaping the product,taking into account the curvilinearity of the trajectory and the design features of the stretch press.The assembly of parts of the main range of power structures,manufactured in the conditions of an aircraft plant and representing blanks of complex spatial shape,is carried out using electron beam welding installations.As is known,welding processes also lead to deviations of the product from the theory.In this case,in order to establish the most efficient technological process,a problem arises associated with the selection of optimal technological parameters.As part of the technological methods for reducing deviations during assembly,it is proposed to use anticipatory curvatures of individual elements and optimal routes.In this case,it is planned to develop new formulations and methods for solving problems.Modern mechanical engineering is characterized by an ever-increasing frequency of turnover of production objects,complication of structural forms,and an increase in the overall dimensions of structural parts.Therefore,the developed new,flexible technical solutions based on computational modeling are relevant for modern production organization.Expected results:As a result of the project,a set of numerical methods and calculation programs will be developed for-determining the trajectories of movement of control elements when covering with extreme tensile deformations,-optimization of trajectories taking into account a certain permissible space of limiting kinematic deformation schemes,-determining the advance of stiffeners during assembly,compensating for welding deformations,-optimization of assembly routes by welding of thin-walled structures.Modeling of technological processes taking into account physical(plasticity),geometric and contact nonlinearity is carried out in comparison with full-scale experiments.The developed methods,algorithms and programs will be a digital addition to production equipment,allowing one to determine optimal operation,which makes it possible,even at the pre-production stage,to optimize the parameters of the manufacturing and assembly processes of thin-walled structures to shorten the cycle of technological process development and increase the technical and economic indicators of production.
Application Abstract: Annotation:The project is aimed at developing methods for establishing an effective technological process for shaping and assembling thin-walled structures.Modern equipment that aircraft manufacturing enterprises are equipped It has computer numerical control(CNC),in particular stretch presses.The accuracy of the resulting part shape will depend on the accuracy of the calculated and manufactured tooling shape,which specifies the predictive shape of the panel,and the deformation trajectory of the sheet blank.Prediction of the load that forms the geometry of the workpiece during deformation and determination of optimal process conditions is possible using numerical methods taking into account the analysis of full-size theoretical models.The novelty of the project task lies in the development of a quality criterion and a numerical optimization method for shaping the product,taking into account the curvilinearity of the trajectory and the design features of the stretch press.The assembly of parts of the main range of power structures,manufactured in the conditions of an aircraft plant and representing blanks of complex spatial shape,is carried out using electron beam welding installations.As is known,welding processes also lead to deviations of the product from the theory.In this case,in order to establish the most efficient technological process,a problem arises associated with the selection of optimal technological parameters.As part of the technological methods for reducing deviations during assembly,it is proposed to use anticipatory curvatures of individual elements and optimal routes.In this case,it is planned to develop new formulations and methods for solving problems.Modern mechanical engineering is characterized by an ever-increasing frequency of turnover of production objects,complication of structural forms,and an increase in the overall dimensions of structural parts.Therefore,the developed new,flexible technical solutions based on computational modeling are relevant for modern production organization.Expected results:As a result of the project,a set of numerical methods and calculation programs will be developed for-determining the trajectories of movement of control elements when covering with extreme tensile deformations,-optimization of trajectories taking into account a certain permissible space of limiting kinematic deformation schemes,-determining the advance of stiffeners during assembly,compensating for welding deformations,-optimization of assembly routes by welding of thin-walled structures.Modeling of technological processes taking into account physical(plasticity),geometric and contact nonlinearity is carried out in comparison with full-scale experiments.The developed methods,algorithms and programs will be a digital addition to production equipment,allowing one to determine optimal operation,which makes it possible,even at the pre-production stage,to optimize the parameters of the manufacturing and assembly processes of thin-walled structures to shorten the cycle of technological process development and increase the technical and economic indicators of production.
