亚博vip

 

【科研进展情况】

亚博vip jinri,woyuanwangjianxijiaoshouzuoweitongxunzuozhe,liyangboshisheng、chenjinjiejiaoshou、shixianfengjiaoshou、chenlongboshishengzuoweizuozhe,zaiguojixueshuqikaninternational journal of fatigue (international journal of fatigue, 2020, 139, 105750)shangfabiaolunwen“study on the effect of residual stresses on fatigue crack initiation in rails”。gailunwenyanjiulegangguishengchanjifuyiguochengzhongchanshengdecanyuyingliduigangguipilaoliewenmengshengdeyingxiangguilv, jieshilegangguicanyuyingliyugangguipilaoliewenmengshengshoumingzhijianguanxidefuzaxing。

【内容介绍】

1.研究目的:

gundongjiechupilaoliewenshitielugangguidezhuyaosunshangleixingzhiyi。gundongjiechupilaoliewenbujinhuidadasuoduangangguideshiyongshouming,zengjiatielubumenyongyugangguiweixiuyugenghuandezhichu,haihuiyingxiangliecheyunxingpingshunxingnaizhiyunxinganquanxing。qianrenyanjiubiaoming,canyuyinglishigangguipilaoliewenmengshengyukuozhandezhongyaoyingxiangyinsuzhiyi;gangguideshengchanguocheng(zaixianrechuli、jiaozhideng)jifuyiguocheng(lunguijiechuzuoyong)junhuiyingxianggangguicanyuyinglidexingchengyubianhua。weigengjiashenrudifenxicanyuyingliyugangguipilaoliewenmengshengshoumingzhijiandeneizailianxi,benwencaiyongyouxianyuanfangfafenxizaixianrechuligangguicanyuyinglidechansheng-yanhuaguilv,bingyilinjiepingmianfazuoweigangguipilaosunshangfenxizhunze,yanjiucanyuyingliduigangguipilaoliewenmengshengdeyingxiangjiliyuguilv。

2.主要创新点:

亚博vip (1)benwentongguoduigangguishengchan-fuyiquanguochengdeyouxianyuanmoni,yanjiulezaixianrechuligangguidecanyuyinglizhuangtaijicanyuyinglikongjianfenbuguilv。

(2)benwenduizaixianrechuligangguirechuli、jiaozhidengshengchangongxuzhongchanshengdecanyuyingliduigangguipilaoliewenmengshengcanshudeyingxiangjinxinglelianghuafenxi。

亚博vip (3)benwenyanjiulelunzaijiazaiguochengzhonglinjiepingmianshangdeyinglifenliang、canyuyinglifenliangyugangguipilaoliewensunshangcanliangzhijiandexiangguanxing。

3.研究结论:

亚博vip (1)fuyizaixianrechuligangguidegecanyuyinglifenliangzhong,zongxiangyinglizuida,danqitacanyuyinglifenliangbingweixiaozhikeyihulve,zaijinxinggangguisunshangfenxishi,qigexiangcanyuyinglifenliangjunyingyuyikaolv。

(2)zaixianrechuligangguishengchanguocheng、lunguizhongfugundongjiechuguochengzhongchanshengdecanyuyingliduigangguipilaoliewenmengshengyoujiaodayingxiang。xiangguanyanjiuzhongyingchongfenkaolvcanyuyingliduigangguipilaosunshangdezuoyong。

(3)不同轮轨摩擦系数及轮轨力工况下,疲劳参量FPmax与残余应力之间并未呈现正相关或负相关关系。

shangshuyanjiuchengguojieshilegangguicanyuyingliyugangguipilaoliewenmengshengshoumingzhijianguanxidefuzaxing,weijinyibufenxigangguicanyuyingliyugangguipilaoliewenmengshengjilideneizailianxi,bingzhenduixingditichugangguigundongjiechupilaoliewenyufangyukongzhicuoshi,diandinglelilunjichu。 

【精要导读】