{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"介绍了机加工对金属圆棒拉伸试样力学性能检测结果的影响.按照国家标准中关于圆棒拉伸试样的机加工要求以及金属材料室温拉伸试验方法,分别从圆棒拉伸试样的尺寸公差、形状公差、表面粗糙度及<span style=\"color:red\">过渡</span><span style=\"color:red\">圆弧</span>半径4个方面进行了讨论.结果表明,形状公差越大,抗拉强度和断后伸长率越小;尺寸正公差越大,其断后伸长率越大,尺寸负公差越大,其断后伸长率越小;表面粗糙度越大,抗拉强度和断面收缩率下降的趋势越明显,表面粗糙度越小,抗拉强度和断面收缩率逐渐增大且慢慢趋于缓和;<span style=\"color:red\">过渡</span><span style=\"color:red\">圆弧</span>R越大,其上屈服强度是逐渐增大的,但是当<span style=\"color:red\">过渡</span><span style=\"color:red\">圆弧</span>满足R≥0.75d0后,其上屈服强度的增加逐渐变缓.","authors":[{"authorName":"李凯","id":"630b35f0-d235-4742-a11f-5c4dde02a8b2","originalAuthorName":"李凯"},{"authorName":"岑风","id":"9adbd0e9-5c1e-4a62-9294-7c093319f0b7","originalAuthorName":"岑风"}],"doi":"10.13228/j.boyuan.issn1001-0777.20130111","fpage":"9","id":"61be9945-4a71-4661-a45e-2e8fd145fd2c","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":"84c4acd9-2d2f-4320-88b1-f4c167c6de74","keyword":"试样机加工","originalKeyword":"试样机加工"},{"id":"b33488f1-9d31-4819-9501-16738207e7de","keyword":"力学性能","originalKeyword":"力学性能"},{"id":"b5c40947-6b95-4bd7-894b-9b49ce3f3eae","keyword":"尺寸公差","originalKeyword":"尺寸公差"},{"id":"902e2fbb-90bf-4b14-9f83-b78e8b6ea178","keyword":"形状公差","originalKeyword":"形状公差"},{"id":"bcd86978-6c89-47e0-952c-ac5ed8e14d2b","keyword":"表面粗糙度","originalKeyword":"表面粗糙度"},{"id":"58f70a46-c9e3-4c95-a2ee-6d101abc12b0","keyword":"<span style=\"color:red\">过渡</span><span style=\"color:red\">圆弧</span>","originalKeyword":"过渡圆弧"}],"language":"zh","publisherId":"wlcs201404003","title":"机加工对圆棒金属拉伸试样试验结果的影响","volume":"32","year":"2014"},{"abstractinfo":"为了解决目前凿岩钎具尾孔加工过程中存在的工艺性差,加工效率低,加工出来的直孔与<span style=\"color:red\">圆弧</span>孔连接不好等缺陷;本文通过用一种新型的双孔内排屑<span style=\"color:red\">圆弧</span>钻头来代替传统BTA钻头在数控深孔钻床上对凿岩钎头尾孔加工过程的大量研究,探索出了一种用新型双孔内排屑<span style=\"color:red\">圆弧</span>钻头加工凿岩钎具尾孔的先进工艺,能在不更换刀具的情况下将凿岩钎具尾孔的直孔与<span style=\"color:red\">圆弧</span>孔部分一次加工成型,并使生产效率提升一倍以上,尾孔表面粗糙度可达到Ra0.8～3.2,极大地提高了凿岩钎具尾孔加工的质量和效率.","authors":[{"authorName":"张友才","id":"56b3bdd3-c0d4-40f9-91cf-7098731481bb","originalAuthorName":"张友才"},{"authorName":"马绍宏","id":"8a324e66-778b-4c9e-b35b-29eaad47e79f","originalAuthorName":"马绍宏"}],"doi":"10.3969/j.issn.1003-7292.2016.03.008","fpage":"194","id":"a48ee057-a6c1-4773-9404-12b534b26036","issue":"3","journal":{"abbrevTitle":"YZHJ","coverImgSrc":"journal/img/cover/YZHJ.jpg","id":"75","issnPpub":"1003-7292","publisherId":"YZHJ","title":"硬质合金"},"keywords":[{"id":"c8bb2feb-168b-460a-abd5-8d297c1fba48","keyword":"硬质合金","originalKeyword":"硬质合金"},{"id":"1cd22fe3-b6fc-4bd4-959f-f4dca23b1c3b","keyword":"涂层技术","originalKeyword":"涂层技术"},{"id":"ee134ecb-80eb-48c3-a8e8-deb4a05fa2d6","keyword":"深孔加工","originalKeyword":"深孔加工"},{"id":"3e47a5fa-cffe-418b-9984-3f7e95e638df","keyword":"BTA","originalKeyword":"BTA"},{"id":"45131d62-5017-4692-828c-df155abc83ed","keyword":"双孔<span style=\"color:red\">圆弧</span>钻头","originalKeyword":"双孔圆弧钻头"}],"language":"zh","publisherId":"yzhj201603008","title":"一种错齿双孔<span style=\"color:red\">圆弧</span>深孔钻头设计与应用研究","volume":"33","year":"2016"},{"abstractinfo":"利用非线性动力响应有限元分析程序(DYNA3D),对无机/有机复合<span style=\"color:red\">圆弧</span>风挡的设计方案的抗鸟撞能力进行了数值模拟分析.根据数值分析得到的应力、应变和位移等结果,采用3.5mmGlass+2.5mmPU+10PMMA结构的风挡可抵抗550km/h的鸟撞击.分析结果的可靠性得到后来试验结果的证实.","authors":[{"authorName":"臧曙光","id":"f0f4eb1f-99bf-4bf4-b85f-a50bb5b32ddc","originalAuthorName":"臧曙光"},{"authorName":"马眷荣","id":"cdacd121-98fd-4719-a6c0-59ab41b5a265","originalAuthorName":"马眷荣"},{"authorName":"秦海霞","id":"62fd957b-7fde-4183-ada4-66bfa7e8de6b","originalAuthorName":"秦海霞"},{"authorName":"石新勇","id":"2e574d19-92e8-4937-a620-b10ecec14296","originalAuthorName":"石新勇"}],"doi":"10.3969/j.issn.1005-5053.2003.z1.042","fpage":"183","id":"e6eade53-8767-4233-a5f5-53023127f12d","issue":"z1","journal":{"abbrevTitle":"HKCLXB","coverImgSrc":"journal/img/cover/HKCLXB.jpg","id":"41","issnPpub":"1005-5053","publisherId":"HKCLXB","title":"航空材料学报"},"keywords":[{"id":"b6c8c8c7-e5f4-4e92-b9ef-f76808cdc949","keyword":"<span style=\"color:red\">圆弧</span>风挡","originalKeyword":"圆弧风挡"},{"id":"18fb7db4-b7eb-4128-891a-20f0ba0f85d9","keyword":"抗鸟撞能力","originalKeyword":"抗鸟撞能力"},{"id":"cb9227f8-b768-43a7-8a5c-53ade87a3233","keyword":"数值模拟分析","originalKeyword":"数值模拟分析"}],"language":"zh","publisherId":"hkclxb2003z1042","title":"无机/有机复合<span style=\"color:red\">圆弧</span>风挡抗鸟撞能力数值分析","volume":"23","year":"2003"},{"abstractinfo":"Z型框缘类零件是组成飞机骨架的主要受力零件,传统的加工方法无法保证零件的成形精度和表面质量.本文根据数控四轴滚弯成形的功能和工艺特点,在机床响应工步范围内,提出了变曲率零件外形轮廓等<span style=\"color:red\">圆弧</span>逼近算法,对变曲率零件外形轮廓简化成有限段等曲率弧段,并对各弧段曲率半径的回弹量做了补偿修正,完成了复杂变曲率Z型材连续滚弯成形和加工精度的控制.成形零件经标准检验样板检测发现:相比以往CAD手动划分滚弯加工,等<span style=\"color:red\">圆弧</span>逼近算法对零件的外形轮廓弧段的合理划分,有效提高了复杂变曲率Z型材零件的滚弯成形精度和加工效率.","authors":[{"authorName":"陈鹏","id":"9534e8c2-af9e-4cd8-9eec-be06905c06e5","originalAuthorName":"陈鹏"},{"authorName":"薛红前","id":"c5886d68-1ca4-4132-aabf-700ff713f3ec","originalAuthorName":"薛红前"},{"authorName":"王杰","id":"7e75f9e4-cc4c-4901-91f8-aaae1d5e1dd8","originalAuthorName":"王杰"},{"authorName":"张小平","id":"8e48750b-9820-4448-9799-4d31362a6d36","originalAuthorName":"张小平"},{"authorName":"刘平利","id":"3824f13d-a980-452e-b193-59884e639345","originalAuthorName":"刘平利"}],"doi":"","fpage":"68","id":"d1a7eb7c-378e-49d0-84c4-396858215592","issue":"1","journal":{"abbrevTitle":"CLKXYGY","coverImgSrc":"journal/img/cover/CLKXYGY.jpg","id":"14","issnPpub":"1005-0299","publisherId":"CLKXYGY","title":"材料科学与工艺"},"keywords":[{"id":"374277bd-a0e0-4471-87b0-503654e6a42f","keyword":"滚弯成形","originalKeyword":"滚弯成形"},{"id":"871da6cf-04db-4a93-a824-686c592b6fe7","keyword":"变曲率","originalKeyword":"变曲率"},{"id":"a021dc69-bded-4981-bbc4-6239f66e89f3","keyword":"等<span style=\"color:red\">圆弧</span>逼近算法","originalKeyword":"等圆弧逼近算法"},{"id":"2ac52db6-21b0-44e6-aff1-4f6cff1044cb","keyword":"弧段划分","originalKeyword":"弧段划分"},{"id":"3528801c-6dfd-443b-a507-9fdc4f682930","keyword":"Z型材","originalKeyword":"Z型材"}],"language":"zh","publisherId":"clkxygy201401012","title":"Z型材变曲率数控滚弯等<span style=\"color:red\">圆弧</span>逼近算法与实现","volume":"22","year":"2014"},{"abstractinfo":"采用分子动力学方法对不同刀尖<span style=\"color:red\">圆弧</span>半径时在纳米级尺度下切削加工单晶铜表面的过程进行分子动力学建模、计算与分析,研究不同刀尖<span style=\"color:red\">圆弧</span>半径对单晶铜纳米切削过程中微观接触区域原子状态和作用力变化的影响规律.研究结果发现:在单晶铜纳米切削过程中,切削作用力、位错及位错发射等缺陷随着切削厚度或刀尖<span style=\"color:red\">圆弧</span>半径的增大而增加;在相同切削厚度,相同切削距离下,刀尖<span style=\"color:red\">圆弧</span>半径越大,在刀具前方堆积的切屑体积越小.此外,在切削距离为1 nm时,切削作用力发生突变;在切削距离1 nm到2 nm时,可以明显看到随切削距离的增加,刀尖<span style=\"color:red\">圆弧</span>半径越小,切削作用力上升幅度越大.在切削距离为3.5 nm时,切削作用力基本保持稳定波动,其主要原因是位错等缺陷的产生引发作用力的波动.","authors":[{"authorName":"李勇","id":"3f2cfc2e-aea1-4a47-8d6e-5b2eb24d0468","originalAuthorName":"李勇"},{"authorName":"杨晓京","id":"30aff273-2ca3-4770-9faf-04d82ba33d38","originalAuthorName":"杨晓京"}],"doi":"10.11896/j.issn.1005-023X.2015.02.033","fpage":"155","id":"60c23cba-dd26-4e5f-971c-a9804bc23807","issue":"2","journal":{"abbrevTitle":"CLDB","coverImgSrc":"journal/img/cover/CLDB.jpg","id":"8","issnPpub":"1005-023X","publisherId":"CLDB","title":"材料导报"},"keywords":[{"id":"33593b9c-3694-43e7-b71b-73616e030cbf","keyword":"纳米切削","originalKeyword":"纳米切削"},{"id":"14ede375-4beb-49bf-b1e6-d048af445321","keyword":"刀尖<span style=\"color:red\">圆弧</span>半径","originalKeyword":"刀尖圆弧半径"},{"id":"a8b13ba0-36df-4b0b-ab73-15f7f3cbcbdd","keyword":"位错","originalKeyword":"位错"},{"id":"0ec73450-445d-48a9-9f62-fa4e017157d0","keyword":"分子动力学","originalKeyword":"分子动力学"}],"language":"zh","publisherId":"cldb201502033","title":"刀尖<span style=\"color:red\">圆弧</span>半径对单晶铜纳米切削过程影响的分子动力学分析","volume":"29","year":"2015"},{"abstractinfo":"在小半径<span style=\"color:red\">圆弧</span>面切向残余应力的X射线衍射测量中,对于每个名义Ψ0角,X射线照射区域各点的实际Ψ0角是连续变化的.为了便于分析,本文建议采用X射线吸收因子恒定的侧倾法进行测量.在此条件下,本文的推导结果表明,当入射线X射线束的中心与试件待测区域的中心重合时,能够测得的各名义Ψ0角的平均衍射角2θ与sin2Ψ0之间存在线性关系,并且可以利用测定平板试样残余应力同样的公式计算切向残余应力σφ.在实际测量中,上述两个中心不可能完全重合.为此,可以利用本文推荐的成对正、负Ψ0线性拟合和双侧取点抛物线拟合两种方法来选择名义Ψ0角,并进行数据处理.半径分别等于1.5、2.5和5.0mm的三根圆柱形喷丸试样的试验结果说明,上述两种方法都可以给出正确的切向残余应力测量结果.","authors":[{"authorName":"赵升升","id":"7f38c00e-516a-4a0d-b3ee-3810d913f3eb","originalAuthorName":"赵升升"},{"authorName":"尧燕","id":"3b695b10-2b02-4459-8787-ff91e129e25c","originalAuthorName":"尧燕"},{"authorName":"钟健","id":"dd752da3-a2c0-4b80-b83c-d7aed0eacdc0","originalAuthorName":"钟健"},{"authorName":"李家宝","id":"1114d406-3082-4cdd-a792-c999598d02b9","originalAuthorName":"李家宝"}],"doi":"","fpage":"536","id":"0458ee3c-a4c7-4768-8f8b-16450ae5b6e7","issue":"4","journal":{"abbrevTitle":"CLKXYGCXB","coverImgSrc":"journal/img/cover/CLKXYGCXB.jpg","id":"13","issnPpub":"1673-2812","publisherId":"CLKXYGCXB","title":"材料科学与工程学报"},"keywords":[{"id":"cac19fff-025b-41c7-85e3-94d6ac9746c0","keyword":"X射线应力测定","originalKeyword":"X射线应力测定"},{"id":"1ff574a5-8a60-4908-8c60-1a231bd203a8","keyword":"小半径<span style=\"color:red\">圆弧</span>面","originalKeyword":"小半径圆弧面"},{"id":"fa597790-8463-4624-9a94-f7dfd2c140fe","keyword":"切向残余应力","originalKeyword":"切向残余应力"}],"language":"zh","publisherId":"clkxygc201404014","title":"利用X射线测定小半径<span style=\"color:red\">圆弧</span>面切向残余应力的方法","volume":"32","year":"2014"},{"abstractinfo":"论述了烯烃聚合催化剂的发展更新过程,催化聚合的过程.涉及配位聚合的链增长机理、单体几种可能的插入模式及聚合的立构控制方式、链转移或链终止机理以及可能存在的催化活性中心的失活过程.对于<span style=\"color:red\">过渡</span>金属催化烯烃聚合的理解有助于催化剂设计的理性化.","authors":[{"authorName":"陈正军","id":"d742d63f-82a4-48be-b7e8-f1b7891d6e2f","originalAuthorName":"陈正军"}],"doi":"","fpage":"1","id":"bf4ac7ff-9ea1-47bb-a723-190a329c4d63","issue":"3","journal":{"abbrevTitle":"GFZCLKXYGC","coverImgSrc":"journal/img/cover/GFZCLKXYGC.jpg","id":"31","issnPpub":"1000-7555","publisherId":"GFZCLKXYGC","title":"高分子材料科学与工程"},"keywords":[{"id":"a5a898ab-043f-4931-958f-bbc15eb78513","keyword":"烯烃聚合催化剂","originalKeyword":"烯烃聚合催化剂"},{"id":"38519524-f3ec-4251-9305-8eec67ad43fb","keyword":"链增长","originalKeyword":"链增长"},{"id":"8d68ed8e-03de-4d7f-bcc6-c1a2af20b227","keyword":"链转移","originalKeyword":"链转移"},{"id":"94bcafe8-ebc5-4a04-86b8-468855017226","keyword":"链终止","originalKeyword":"链终止"},{"id":"08444e7e-54f9-4e27-9808-4a714ad7a8be","keyword":"失活过程","originalKeyword":"失活过程"}],"language":"zh","publisherId":"gfzclkxygc200603001","title":"<span style=\"color:red\">过渡</span>金属催化烯烃聚合","volume":"22","year":"2006"},{"abstractinfo":"本文讨论晶体单向平面生长时,初始<span style=\"color:red\">过渡</span>阶段的溶质分布.给出了初始<span style=\"color:red\">过渡</span>阶段固—液界面前沿液相中的溶质浓度分布表达式;提出了缩短初始<span style=\"color:red\">过渡</span>区长度的方法;确定了最短<span style=\"color:red\">过渡</span>区长度的极限;找出了实现最短<span style=\"color:red\">过渡</span>区所要求的速度函数.","authors":[{"authorName":"李言祥","id":"f60f0fbe-a0ef-4181-884b-642f4e8f10c7","originalAuthorName":"李言祥"},{"authorName":"柳百成","id":"dc0ffdfa-2274-4faa-bd0f-0e11018273a2","originalAuthorName":"柳百成"}],"categoryName":"|","doi":"","fpage":"82","id":"bbd7dae0-d989-4065-911a-9b5f8114cc89","issue":"1","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"a1e081a1-feb1-4eff-a383-97fee6911747","keyword":"晶体生长","originalKeyword":"晶体生长"},{"id":"941d1f3f-63f5-4355-97ee-2e716e20868e","keyword":"solute distribution","originalKeyword":"solute distribution"},{"id":"2ce3b40e-75e0-4f0b-929f-8e7c0b59811c","keyword":"composition transient","originalKeyword":"composition transient"}],"language":"zh","publisherId":"0412-1961_1988_1_4","title":"晶体生长的初始成分<span style=\"color:red\">过渡</span>区","volume":"24","year":"1988"},{"abstractinfo":"为分析CMT焊接方法的工艺特点,采用高速CCD摄像机建立了电弧形态和熔滴<span style=\"color:red\">过渡</span>视觉传感系统并且通过电流、电压传感器建立了波形采集系统,以此分析其能量输入特点和熔滴<span style=\"color:red\">过渡</span>行为.结果显示,CMT焊接波形控制呈现典型的直流脉冲特征,焊接时热输入较低;在CMT短路<span style=\"color:red\">过渡</span>过程中,熔滴尺寸随焊接电流的增加幅度不大,将熔滴尺寸控制在一定范围内可实现稳定的短路<span style=\"color:red\">过渡</span>.CMT短路<span style=\"color:red\">过渡</span>通过焊丝回抽,避免了大的电磁力,有效地消除了飞溅.当电流增大到一定值时,其<span style=\"color:red\">过渡</span>形式将转变为射滴<span style=\"color:red\">过渡</span>和短路<span style=\"color:red\">过渡</span>的混合<span style=\"color:red\">过渡</span>.","authors":[{"authorName":"张洪涛","id":"a9bdcdaa-5c6c-4530-9c5b-f3cbc3f586e7","originalAuthorName":"张洪涛"},{"authorName":"冯吉才","id":"b195d9cd-9844-4acc-b004-3863ba2dc24d","originalAuthorName":"冯吉才"},{"authorName":"胡乐亮","id":"c3f6e11e-2f2c-4542-b08e-175b665f0887","originalAuthorName":"胡乐亮"}],"doi":"","fpage":"128","id":"8946830d-ad93-4dc3-ac9e-176964c21562","issue":"2","journal":{"abbrevTitle":"CLKXYGY","coverImgSrc":"journal/img/cover/CLKXYGY.jpg","id":"14","issnPpub":"1005-0299","publisherId":"CLKXYGY","title":"材料科学与工艺"},"keywords":[{"id":"7ddd06bc-650b-4954-9e2d-ae0b6b732621","keyword":"CMT","originalKeyword":"CMT"},{"id":"e12c5398-f7c4-49cb-8a7d-1bcc7dc64edf","keyword":"熔滴<span style=\"color:red\">过渡</span>","originalKeyword":"熔滴过渡"},{"id":"6b158618-7a56-4be6-89bf-5786d2f9a6ea","keyword":"能量输入","originalKeyword":"能量输入"},{"id":"e8280803-6a35-470e-940a-42f8db0ee62c","keyword":"电弧形态","originalKeyword":"电弧形态"}],"language":"zh","publisherId":"clkxygy201202024","title":"CMT能量输入特点与熔滴<span style=\"color:red\">过渡</span>行为","volume":"20","year":"2012"},{"abstractinfo":"采用CFD数值模拟方法对中档功率燃气轮机燃气涡轮与动力涡轮之间的涡轮<span style=\"color:red\">过渡</span>段进行气动性能优化设计.在原始涡轮<span style=\"color:red\">过渡</span>段流道及承力支板基础上,新设计进口导流叶片,优化<span style=\"color:red\">过渡</span>段流道,并采用Numeca软件Design3D 优化平台计算机自动寻优,数值模拟相对比较说明,新设计的涡轮<span style=\"color:red\">过渡</span>段气动性能满足指标要求.涡轮<span style=\"color:red\">过渡</span>段承接燃气涡轮、动力涡轮间的流场匹配,<span style=\"color:red\">过渡</span>段内各构件必须整体协调设计,可通过流道曲率控制与通流面积渐扩方式进行<span style=\"color:red\">过渡</span>段内的流动控制,在保证流道内没有分离流动前提下,静压沿径向分布等值均匀、沿流向分布梯次分明,总压损失最小.","authors":[{"authorName":"陈江","id":"122b237f-447b-4738-8ef8-a57f56591d84","originalAuthorName":"陈江"},{"authorName":"朴龙贤","id":"2b4638e1-5162-43ce-8b0f-0a1b766b7e82","originalAuthorName":"朴龙贤"},{"authorName":"杜刚","id":"d3614412-e6e5-4005-bdd5-76d02950d8fc","originalAuthorName":"杜刚"},{"authorName":"张慧","id":"87738583-b1cf-4b77-8cee-f6ede408b20c","originalAuthorName":"张慧"}],"doi":"","fpage":"210","id":"5d5200ab-dd13-4601-a62d-35ea9ff3bd15","issue":"2","journal":{"abbrevTitle":"GCRWLXB","coverImgSrc":"journal/img/cover/GCRWLXB.jpg","id":"32","issnPpub":"0253-231X","publisherId":"GCRWLXB","title":"工程热物理学报   "},"keywords":[{"id":"ee6794d6-730b-4311-983a-7306f93c6783","keyword":"燃气轮机","originalKeyword":"燃气轮机"},{"id":"b708e507-0d3a-4e2a-ab66-269846723c6a","keyword":"涡轮","originalKeyword":"涡轮"},{"id":"97a2116a-7b99-4ce7-ba3a-144f3779a3d0","keyword":"气动设计","originalKeyword":"气动设计"},{"id":"2866eb6e-3e05-4feb-aab3-b73acefbe2bb","keyword":"数值优化","originalKeyword":"数值优化"}],"language":"zh","publisherId":"gcrwlxb201102008","title":"涡轮<span style=\"color:red\">过渡</span>段气动性能数值优化","volume":"32","year":"2011"}],"totalpage":286,"totalrecord":2858}