{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"采用MARC软件对铍环<span style=\"color:red\">激光束</span><span style=\"color:red\">钎焊</span>过程的温度场和应力场进行了有限元分析.温度场分析得到与铍环实际<span style=\"color:red\">激光束</span><span style=\"color:red\">钎焊</span>基本一致的焊缝形状.应力场分析表明,焊接后轴向应力和环向应力在焊缝中心的钎料上为压应力,在铍环外表面热影响区和内表面均为拉应力,径向应力为压应力,焊接残余应力主要分布在离焊缝2 mm的范围内,焊接后铍环内外表面发生径向收缩.将有限元分析得到的铍环外表面的轴向残余应力结果与实测结果进行了比较,二者所反映的应力变化趋势基本一致.","authors":[{"authorName":"董平","id":"298ed4a2-d76a-4fea-b72e-be154f4514d7","originalAuthorName":"董平"},{"authorName":"陈裕泽","id":"db18eb15-45c8-4aa0-9816-5a6f577172fb","originalAuthorName":"陈裕泽"},{"authorName":"邹觉生","id":"865d3485-80bc-434e-aa27-f3f65df97aa0","originalAuthorName":"邹觉生"},{"authorName":"李盛和","id":"e6b8d6e0-33b7-4e75-832b-f981bc4ab238","originalAuthorName":"李盛和"}],"doi":"10.3321/j.issn:0412-1961.2002.08.020","fpage":"881","id":"58fce5ad-47e5-4b79-8445-06c5301d88ef","issue":"8","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"670f1abc-7ee3-4a2d-96bf-67673872371f","keyword":"铍环","originalKeyword":"铍环"},{"id":"f7902172-6e8e-4a0a-bc54-7c242cc7dd8c","keyword":"<span style=\"color:red\">激光束</span><span style=\"color:red\">钎焊</span>","originalKeyword":"激光束钎焊"},{"id":"7bd370da-474a-4027-a9bf-88c787b715ae","keyword":"温度场","originalKeyword":"温度场"},{"id":"16c4f70e-e940-4475-bf84-bdaa9a72a1eb","keyword":"应力场","originalKeyword":"应力场"},{"id":"0f73cb48-63d9-4b8e-b738-6684291aa3bd","keyword":"有限元分析","originalKeyword":"有限元分析"}],"language":"zh","publisherId":"jsxb200208020","title":"铍环<span style=\"color:red\">激光束</span><span style=\"color:red\">钎焊</span>过程的数值模拟","volume":"38","year":"2002"},{"abstractinfo":"研究预热对铍环<span style=\"color:red\">激光束</span><span style=\"color:red\">钎焊</span>过程温度场和应力场分布的影响. 采用轴对称模型和热力解耦的有限元方法, 并假定沉积到钎缝表面的<span style=\"color:red\">激光束</span>能量为Gauss分布, 预热通过在焊接加热前添加一个能量密度低、有效加热半径大的单独工况实现. 结果表明, 预热使铍环钎缝外表面焊接最高温度增加, 温度梯度减小, 但焊深明显增加; 采用预热工况焊接后, 钎缝附近塑性变形区焊接残余应力明显减小, 而热影响区残余应力增大. 从整体分布来看, 预热使铍环外表面焊接残余应力分布均匀化. 对铍环外表面钎缝附近焊接残余应力进行X射线应力测试, 并与有限元分析结果对比, 二者应力变化趋势基本一致. ","authors":[{"authorName":"董平","id":"912bdf05-1dfc-4be0-8ac5-1842679a13df","originalAuthorName":"董平"}],"doi":"10.3969/j.issn.0258-7076.2004.01.034","fpage":"135","id":"ce43471a-9b3d-4592-adab-05be89877b09","issue":"1","journal":{"abbrevTitle":"XYJS","coverImgSrc":"journal/img/cover/XYJS.jpg","id":"67","issnPpub":"0258-7076","publisherId":"XYJS","title":"稀有金属"},"keywords":[{"id":"996e5a0c-0772-40a1-a341-50b2ab251319","keyword":"预热","originalKeyword":"预热"},{"id":"c4425283-2af0-4a7b-a78b-8158dfbc95c3","keyword":"<span style=\"color:red\">激光束</span><span style=\"color:red\">钎焊</span>","originalKeyword":"激光束钎焊"},{"id":"494be571-2cae-4a36-9959-03c017d9ea2f","keyword":"温度场","originalKeyword":"温度场"},{"id":"ddf13b96-3f3b-4806-8064-5b82d82182fb","keyword":"应力场","originalKeyword":"应力场"},{"id":"ad1a242d-d4ab-4a8c-86de-4a3d4d17643a","keyword":"有限元分析","originalKeyword":"有限元分析"}],"language":"zh","publisherId":"xyjs200401034","title":"预热对铍环<span style=\"color:red\">激光束</span><span style=\"color:red\">钎焊</span>过程的影响研究","volume":"28","year":"2004"},{"abstractinfo":"组合圆管外层为铍管,内层为钨管,二者通过过盈配合形成.采用MARC软件对组合圆管<span style=\"color:red\">激光束</span><span style=\"color:red\">钎焊</span>过程进行了数值模拟,得到组合圆管<span style=\"color:red\">钎焊</span>过程的应力场及焊接后的残余应力分布,进一步研究了过盈量对组合圆管焊接残余应力分布的影响,并采用X射线法对组合圆管外表面的焊接残余应力分布进行测试.焊接残余应力有限元计算值与实测值的变化趋势基本一致,验证了有限元模型.","authors":[{"authorName":"董平","id":"3c36f2a4-6a83-4422-960e-14ad609696e7","originalAuthorName":"董平"}],"doi":"10.3969/j.issn.1000-3738.2004.09.005","fpage":"16","id":"408ede92-ed2c-4d89-a314-170b17f955c4","issue":"9","journal":{"abbrevTitle":"JXGCCL","coverImgSrc":"journal/img/cover/JXGCCL.jpg","id":"45","issnPpub":"1000-3738","publisherId":"JXGCCL","title":"机械工程材料"},"keywords":[{"id":"30fc167e-0620-47bf-9e90-2d6e0061e144","keyword":"<span style=\"color:red\">激光束</span><span style=\"color:red\">钎焊</span>","originalKeyword":"激光束钎焊"},{"id":"6d20253e-e2b2-4fb4-b0a7-402da990b4f9","keyword":"组合圆管","originalKeyword":"组合圆管"},{"id":"911aa00b-6ea4-45c4-a091-545cecc36e07","keyword":"过盈配合","originalKeyword":"过盈配合"},{"id":"7a9f20dc-bee2-44c7-80d8-3c7d2b10d30e","keyword":"有限元方法","originalKeyword":"有限元方法"}],"language":"zh","publisherId":"jxgccl200409005","title":"组合圆管<span style=\"color:red\">激光束</span><span style=\"color:red\">钎焊</span>过程的数值模拟","volume":"28","year":"2004"},{"abstractinfo":"采用MARC软件对铍环<span style=\"color:red\">激光束</span><span style=\"color:red\">钎焊</span>过程的温度场和应力场进行了有限元分析.温度场分析得到与铍环实际<span style=\"color:red\">激光束</span><span style=\"color:red\">钎焊</span>基本一致的焊缝形状.应力场分析表明,焊接后轴向应力和环向应力在焊缝中心的钎料上为压应力,在铍环外表面热影响区和内表面均为拉应力,径向应力为压应力,焊接残余应力主要分布在离焊缝2 mm的范围内,焊接后铍环内外表面发生径向收缩.将有限元分析得到的铍环外表面的轴向残余应力结果与实测结果进行了比较,二者所反映的应力变化趋势基本一致.","authors":[{"authorName":"董平","id":"a072e222-5fb2-4e17-abf1-1df47d467e03","originalAuthorName":"董平"},{"authorName":"陈裕泽","id":"5c6d7b4a-61e0-4efe-a2b6-6ce84b2ddb72","originalAuthorName":"陈裕泽"},{"authorName":"邹觉生","id":"01158761-b4fe-4933-8761-9d933f4e3f20","originalAuthorName":"邹觉生"},{"authorName":"李盛和","id":"a5d1980c-61d3-4056-8451-edd534e45c02","originalAuthorName":"李盛和"}],"categoryName":"|","doi":"","fpage":"881","id":"bd4561d0-92e9-4fa6-bd56-de059aee7600","issue":"8","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"04d158e4-89ba-490d-9b98-167e290f011a","keyword":"铍环","originalKeyword":"铍环"},{"id":"50f23e9e-cbac-45bf-8808-1fed45e0833d","keyword":"null","originalKeyword":"null"},{"id":"cee1d0d8-15db-431b-a6e3-59bfe7d48205","keyword":"null","originalKeyword":"null"},{"id":"c2c44bf8-67cc-4028-9cb0-a0f3b5f54c3b","keyword":"null","originalKeyword":"null"}],"language":"zh","publisherId":"0412-1961_2002_8_10","title":"铍环<span style=\"color:red\">激光束</span><span style=\"color:red\">钎焊</span>过程的数值模拟","volume":"38","year":"2002"},{"abstractinfo":"光纤<span style=\"color:red\">激光</span>器相干合成技术的研究对于获得高功率和良好<span style=\"color:red\">光束</span>质量的<span style=\"color:red\">激光</span>输出具有十分重大的意义,而<span style=\"color:red\">激光束</span>相干合成技术对光纤<span style=\"color:red\">激光</span>器的相干合成具有重要的启发作用.介绍了<span style=\"color:red\">激光束</span>相干合成技术的基本原理和研究进展,按照不同的合成机理对各种相干合成方案进行了分类,详细阐述了各种方案的合成机理和技术难点,并对各种方案作了简要的对比和优劣性评价,指出了三种比较有前途的<span style=\"color:red\">激光束</span>相干合成技术方案.","authors":[{"authorName":"雷兵","id":"67c2d5c3-bece-48dc-b341-54f23eaeccdc","originalAuthorName":"雷兵"},{"authorName":"冯莹","id":"4f7c055c-7b9e-4559-844a-3947ad5d9911","originalAuthorName":"冯莹"},{"authorName":"魏立安","id":"63218df3-e2b7-4eef-853e-26d0f08aeeb9","originalAuthorName":"魏立安"},{"authorName":"刘泽金","id":"617f08ff-34ca-4ed8-86c7-50b03ca9046a","originalAuthorName":"刘泽金"}],"doi":"10.3969/j.issn.1007-5461.2007.04.002","fpage":"407","id":"3bb5c205-1d4a-43b5-a096-9091b7176081","issue":"4","journal":{"abbrevTitle":"LZDZXB","coverImgSrc":"journal/img/cover/LZDZXB.jpg","id":"53","issnPpub":"1007-5461","publisherId":"LZDZXB","title":"量子电子学报   "},"keywords":[{"id":"700def71-a47e-4a1f-a170-58f7a24cae7d","keyword":"<span style=\"color:red\">激光</span>技术","originalKeyword":"激光技术"},{"id":"9eda4d15-51b2-4586-852c-8b7450e4cc35","keyword":"相干合成","originalKeyword":"相干合成"},{"id":"6481d1a5-e148-4001-bd68-2cefd9520897","keyword":"锁相","originalKeyword":"锁相"},{"id":"68a1a55f-a302-48e8-9e98-5721864b089c","keyword":"光纤<span style=\"color:red\">激光</span>器","originalKeyword":"光纤激光器"}],"language":"zh","publisherId":"lzdzxb200704002","title":"<span style=\"color:red\">激光束</span>相干合成技术的研究进展","volume":"24","year":"2007"},{"abstractinfo":"阐述了在光刻应用中准分子<span style=\"color:red\">激光束</span>整形的原因和整形前后<span style=\"color:red\">光束</span>能量空间分布结果,并对建立准分子<span style=\"color:red\">激光束</span>整形的理论模型--高斯-谢尔模型(GSM)的方法进行了介绍.总结和分析了微透镜阵列和衍射相位光栅等<span style=\"color:red\">光束</span>均质器用于光刻<span style=\"color:red\">激光束</span>整形的优缺点,包括它们的整形能力、能量损失、干涉效应以及波前和振幅均匀化控制等;同时对主要整形器件的原理、特性和进展情况进行了简要综述.","authors":[{"authorName":"林清华","id":"fb4232f0-8b25-4a7b-9116-5f4975e4698d","originalAuthorName":"林清华"},{"authorName":"宋超","id":"4d77d65b-3515-47ce-ae29-b47f775115d2","originalAuthorName":"宋超"},{"authorName":"王鲁宾","id":"f2fcc42d-4b81-47e5-a1d1-a6a7185fa352","originalAuthorName":"王鲁宾"},{"authorName":"周金运","id":"4b20f4df-7a30-43ad-9487-2779c85b5282","originalAuthorName":"周金运"}],"doi":"10.3969/j.issn.1007-5461.2007.04.003","fpage":"415","id":"72c6a6da-9f54-4f8c-9004-198c62c41713","issue":"4","journal":{"abbrevTitle":"LZDZXB","coverImgSrc":"journal/img/cover/LZDZXB.jpg","id":"53","issnPpub":"1007-5461","publisherId":"LZDZXB","title":"量子电子学报   "},"keywords":[{"id":"f7ce5964-748d-443a-ad8e-f7f2ccdece7c","keyword":"<span style=\"color:red\">激光</span>技术","originalKeyword":"激光技术"},{"id":"fd107fbf-a0d6-43f5-9554-520a17bef1a1","keyword":"准分子<span style=\"color:red\">激光束</span>整形","originalKeyword":"准分子激光束整形"},{"id":"f167c2e7-fd0e-4404-a9ed-074637061693","keyword":"光刻","originalKeyword":"光刻"},{"id":"90b7db70-1fd9-4330-8348-8a53217dfdd3","keyword":"微透镜阵列","originalKeyword":"微透镜阵列"},{"id":"486f7f23-b83f-4685-9aa6-a39b85e1d5d2","keyword":"衍射相位光栅","originalKeyword":"衍射相位光栅"}],"language":"zh","publisherId":"lzdzxb200704003","title":"用于光刻的准分子<span style=\"color:red\">激光束</span>整形及其研究进展","volume":"24","year":"2007"},{"abstractinfo":"介绍了多台He-Ne<span style=\"color:red\">激光</span>器输出<span style=\"color:red\">光束</span>的整合和<span style=\"color:red\">光束</span>压缩的方法.提出用多台低功率<span style=\"color:red\">激光</span>器经过一定的光路系统,对它们的输出<span style=\"color:red\">光束</span>进行整合,用望远镜准直系统对整合后的<span style=\"color:red\">光束</span>进行压缩,大大提高输出功率,且<span style=\"color:red\">光束</span>细锐,<span style=\"color:red\">光束</span>的能量强度达到高斯分布要求.","authors":[{"authorName":"金清理","id":"5a3f8064-020a-4f13-ad66-60e13ee2e964","originalAuthorName":"金清理"}],"doi":"10.3969/j.issn.1001-0777.2005.04.007","fpage":"24","id":"5486ec7b-b100-4fc3-b3ac-4e3bade49128","issue":"4","journal":{"abbrevTitle":"WLCS","coverImgSrc":"journal/img/cover/WLCS.jpg","id":"64","issnPpub":"1001-0777","publisherId":"WLCS","title":"物理测试"},"keywords":[{"id":"20aa7999-743c-473b-b146-5fb4b5801446","keyword":"<span style=\"color:red\">光束</span>整合","originalKeyword":"光束整合"},{"id":"fbfd1b58-5be1-4190-a402-78c7b066432c","keyword":"望远镜系统","originalKeyword":"望远镜系统"},{"id":"f41a7cbd-f6a4-490f-a1df-e621bdf2c356","keyword":"<span style=\"color:red\">光束</span>压缩","originalKeyword":"光束压缩"},{"id":"ba07ec78-7711-4b91-9a25-92b16228a4cd","keyword":"<span style=\"color:red\">激光</span>","originalKeyword":"激光"}],"language":"zh","publisherId":"wlcs200504007","title":"多<span style=\"color:red\">激光束</span>的整合及<span style=\"color:red\">光束</span>压缩的研究","volume":"23","year":"2005"},{"abstractinfo":"报导了磁流体薄片中聚焦<span style=\"color:red\">激光束</span>在探测50Hz交流磁场时产生与磁场相位无关响应的效应.聚焦于并通过磁流体薄片的633nm<span style=\"color:red\">激光束</span>的偏转角仅与交流磁场的幅度相关.为了探寻其机理,还研究了磁流体中聚焦<span style=\"color:red\">激光束</span>对开/关磁场或<span style=\"color:red\">激光</span>的瞬态响应.提出了基于磁熵守恒的磁流体中磁性粒子密度再分布正反馈模型来解释这一效应.这一模型也可以预见磁流体中一种磁-热失稳现象.\n","authors":[{"authorName":"袁绥华","id":"9c517ca4-08e3-41d8-ae8f-549452ab5976","originalAuthorName":"袁绥华"},{"authorName":"李洪杰","id":"350223d2-afe6-4f1f-830f-7111a446a0b9","originalAuthorName":"李洪杰"},{"authorName":"张广溢","id":"c3104a85-973b-48e7-94c6-39c78e424fc2","originalAuthorName":"张广溢"}],"doi":"10.3969/j.issn.1007-4252.2002.01.005","fpage":"18","id":"2582dce3-9823-4c06-95da-5c85d5ad5267","issue":"1","journal":{"abbrevTitle":"GNCLYQJXB","coverImgSrc":"journal/img/cover/GNCLYQJXB.jpg","id":"34","issnPpub":"1007-4252","publisherId":"GNCLYQJXB","title":"功能材料与器件学报   "},"keywords":[{"id":"b77ebc0f-9dfc-419c-b889-3d60f962d2b0","keyword":"相独立响应","originalKeyword":"相独立响应"},{"id":"521ef15c-04e9-442f-9031-0be525acb1a3","keyword":"聚焦<span style=\"color:red\">激光束</span>","originalKeyword":"聚焦激光束"},{"id":"4a1989b5-16f0-4763-9ab9-b4b211bfc21a","keyword":"磁流体","originalKeyword":"磁流体"}],"language":"zh","publisherId":"gnclyqjxb200201005","title":"磁流体薄片中聚焦<span style=\"color:red\">激光束</span>对交流磁场的相位独立响应","volume":"8","year":"2002"},{"abstractinfo":"用<span style=\"color:red\">激光束</span>照射固体材料表面,制备出纯Fe及ZrO_2nm晶粉末,并对粉末形貌、颗粒度及相结构进行了研究,结果表明:纯Fe um级晶粉末含约20％γ-Fe,而ZrO_2粉末完全由二种亚稳定相组成。","authors":[{"authorName":"徐惠彬","id":"ccd9a29e-317f-49ae-aaaf-e720e5af1304","originalAuthorName":"徐惠彬"},{"authorName":"谭树松","id":"fdf77f17-77a2-4106-8f65-9742d60b63af","originalAuthorName":"谭树松"}],"categoryName":"|","doi":"","fpage":"152","id":"eeea8566-53d3-4c38-b0bd-48a8ef96cd75","issue":"2","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"6274c8e7-9e46-4bba-884d-ffc237df84a3","keyword":"<span style=\"color:red\">激光束</span>","originalKeyword":"激光束"},{"id":"c7ffb833-ac06-4138-9a1f-86938517ef00","keyword":"ultrafine powder","originalKeyword":"ultrafine powder"},{"id":"de2a1ae5-5d5f-4ffa-abf6-eb704fc1ba63","keyword":"metastable phase","originalKeyword":"metastable phase"}],"language":"zh","publisherId":"0412-1961_1990_2_2","title":"大功率<span style=\"color:red\">激光束</span>制备ZrO_2,Fe亚稳定相超细粉末","volume":"26","year":"1990"},{"abstractinfo":"本文介绍了一种实验方法,通过观测<span style=\"color:red\">激光束</span>与原子的共振荧光信号,从而知道系统中磁场的零点位置.这种方法有助于我们的冷原子和原子光学实验研究.","authors":[{"authorName":"何明","id":"cedd1a04-f851-48ea-97eb-307613ce08c0","originalAuthorName":"何明"},{"authorName":"王谨","id":"e730358e-afd7-461b-ab27-210bbd6d2cfb","originalAuthorName":"王谨"},{"authorName":"詹明生","id":"c7ba551e-1767-494b-a246-289628ef8a4b","originalAuthorName":"詹明生"}],"doi":"10.3969/j.issn.1007-5461.2004.01.008","fpage":"31","id":"160f91a6-204f-47fc-99c6-b2892426a547","issue":"1","journal":{"abbrevTitle":"LZDZXB","coverImgSrc":"journal/img/cover/LZDZXB.jpg","id":"53","issnPpub":"1007-5461","publisherId":"LZDZXB","title":"量子电子学报   "},"keywords":[{"id":"3740fb02-cf05-4c4a-9629-67d6d1a7103d","keyword":"原子光学","originalKeyword":"原子光学"},{"id":"b010974a-f722-44ed-ac78-7456d5eab701","keyword":"冷原子","originalKeyword":"冷原子"},{"id":"3bc4a6b8-ffaf-4839-a9e6-af83b1885375","keyword":"荧光探测","originalKeyword":"荧光探测"},{"id":"1751c3c5-6fa2-43ae-811b-a04eb0e13c0b","keyword":"磁场零点","originalKeyword":"磁场零点"}],"language":"zh","publisherId":"lzdzxb200401008","title":"利用<span style=\"color:red\">激光束</span>共振荧光探测磁场零点","volume":"21","year":"2004"}],"totalpage":660,"totalrecord":6600}