Modulus wa elasticity konkire: chimene ndi mmene kumasulila?

Choncho anthu ambiri amachita chidwi ndi kusonkhezera kamangidwe ka mphamvu zosiyanasiyana konkire ndi katundu amadza. Konkire thupi olimba ndi chizolowezi kukana mapindikidwe atadziŵa mphamvu kunja. Ndi luso mapindikidwe zotanuka (zosakhalitsa authunthu) amasonyeza modulus konkire elasticity.

Ukulu wa elasticity anatsimikiza pa mayesero osiyana chitsanzo cha kukana maganizo kapena psinjika. Komabe, dziŵani kuti konkire, amene mulibe zolimba, kwamakokedwe osakhazikika. Kuchokera pa zotsatira za chiwembu akutulukira mavuto a chuma ntchito kwa khama. Aone kumathandiza kumvetsa bwino. M'pofunikanso kudziwa modulus koyamba elasticity konkire ndi kuchuluka kwa mapindikidwe.

Pansi pa katundu, mapindikidwe kuwonjezeka chifukwa chakuti konkire ali katundu monga ingayambe. Choyamba, pansi kufinya wina, amapezeka mapindikidwe zotanuka. Ndi chodabwitsa chimene thupi olumala ndi katundu amabwerera mtundu wapachiyambi pambuyo mofulumira ake. Ndiye, pamene zina katundu mu kuyamba zinthu kuchitika, sizingasinthe (pulasitiki) mapindikidwe. Komabe, gawani pulasitiki ndi kusintha zotanuka kovuta. Chifukwa kusintha yomweyo mu mawonekedwe chimadalira pa liwiro kuwonjezeka katundu. Chifukwa cha mapindikidwe zimenezi mu kuwonjezeka katundu amatchedwa zotanuka, ndi kuwonjezeka mu deformities - pulasitiki. Ndi chifukwa ingayambe konkire. mapindikidwe Komanso kale kuwonongedwa kwa chinthu. modulus uyu wa elasticity konkire kawirikawiri amatchedwanso modulus wa mapindikidwe. Amaonekera pogwiritsa ntchito njira zosiyanasiyana.

Modulus wa elasticity konkire anatsimikiza mtima koyamba zovuta. Komabe, phindu lake pafupifupi akhoza kuyika njira zina. matchati ambiri secant mzere kuti pamapindikira, kusonyeza kudalira ya kupanikizika kupsyinjika, nthawi zambiri, ngakhale kuti nthawi zonse, ikufanana ndi tangent, amene udzadutsa anayambira.

Ndi okhulupirika zoona kuti modulus konkire elasticity kumawonjezera mogwirizana mwachindunji ku muzu wa mphamvu yake. Komabe, izi ndi zoona zokha kuti mbali yaikulu ya Zithunzi za (kupanikizika kupsyinjika) ndipo zimadalira pa malo ndi zinthu mayeso. Mwachitsanzo, mitundu ya zinthu madzi zimalimbikitsa mayeso ndi modulus wamkulu wa elasticity index kuposa zitsanzo youma. Ngakhale kuti mphamvu zawo katundu ofanana.

Pa modulus wa elasticity kwambiri bwanji khalidwe la akaphatikiza coarse. kudalira Izi rectilinear. Mwachibadwa, chithunzi cha wopepuka konkire adzakhala poyerekeza zitsanzo lolemera. elasticity The Komanso kumawonjezera ndi zaka zipangizo. Mwachitsanzo, modulus wa elasticity wa B25 konkire, adzakhala apamwamba chaka chimodzi kuposa momwe zinaliri poyamba, koma patatha zaka 10 icho kukula kwambiri. Kudziwa magawo a elasticity pali tebulo wapadera, zomwe zikusonyeza pafupifupi koyamba modulus nkhani iliyonse mtundu.