【正文】 量 、1?、 。運(yùn)用塑性彎曲理論，分析高強(qiáng)鋼球罐殼板沖壓塑性變形機(jī)理，針對(duì)成形工藝的特點(diǎn)，主要討論板殼成形過(guò)程中的結(jié)構(gòu)性問(wèn)題，討論板料塑性變形板內(nèi)膜力對(duì)應(yīng)力狀態(tài)和變形狀態(tài)的作用以及回彈規(guī)律。總的來(lái)說(shuō)彎曲的越厲害，冷彎板的彈性后效百分?jǐn)?shù)率越小。通過(guò)解析或?qū)嶒?yàn)求得此點(diǎn)的應(yīng)變，再由應(yīng)變確定應(yīng)力。因此有可能用幾何方法將其形象的表示出來(lái)。采用應(yīng)力分析設(shè)計(jì)方法，可以搞清應(yīng)力分布情況，該薄的薄，該厚的厚，可比采用常規(guī)設(shè)計(jì)降低鋼材的消耗量約 20%以上。三軸滾彎出的零件兩端有直線段，其長(zhǎng)度等于兩個(gè)相鄰滾輪之間軸心距的一半。高強(qiáng)度鋼板，含有%～%的碳，具有實(shí)質(zhì)上為鐵素體相和貝氏體相的二相組織的金屬組織。關(guān)鍵詞 鋼板 彎曲 變形規(guī)律 應(yīng)力 AbstractIn spherical and cylindrical containers of prefabricated, mostly based on experience, punching and rolling, with little real basis for a systematic study of deformation, this paper plate in the event of deformation of the theoretical research, for the production of actual service. Mainly on the plate deformation research, which are single rate and multicurvature bending steel plate bending. Single bending the steel to study, study of 18 coldformed steel, including the different thickness of the plate, a different bend radius, bending different perspective, the largest measuring IIIsurface strain, load displacement, elastic aftereffect point of view, for the detection Forecast for maximum flexibility and aftersurface strain selected by the angle of the equation, the equation predictive value pared with the experimental results to identify the cause of the discrepancy. Bending the curvature of the plate more study, by twoway rectangular sheet metal bending to force and deformation analysis, through practical tests forming part of the materials for specific assessment can be bent, forming the necessary calculationspressure, die design, forecasting After stamping and bending areas to enhance the resilience of the size precision products, determined after forming part of the residual stress, prevent the process of forming cracks and flaws, as well as forecasting and control the selection of warping.Key words Plate Bending Deformation law Stress 目 錄摘 要 ..............................................................IABSTRACT........................................................II第 1 章 緒 論 ......................................................1 研究的目的和意義 ...............................................................................1 鋼板彎曲沖壓制造工藝簡(jiǎn)述 ................................................................1 國(guó)內(nèi)外研究狀況 ..................................................................................2 本文的主要研究?jī)?nèi)容 ...........................................................................3IV第 2 章 塑性變形理論 ...............................................4 塑性變形的屈服條件 ...................................................