Modulus nke ekwedo nke ihe: ihe ọ na-na-esi kọwaa?

N'ihi ya, ọtụtụ ndị mmadụ nwere mmasị na-esi emetụta imewe nke dị iche iche ihe ike na mmetụta ibu. Concrete bụ a siri ike ahu na-enwe ọchịchọ iguzogide deformation mgbe ọ gụrụ mpụga agha. Ọ bụ ikike na -agbanwe deformation (adịte) egosiputa ihe modulus nke elasticity.

The ịdị ukwuu nke ekwedo kpebisiri na dị iche iche sample ule iguzogide erughị ala ma ọ bụ mkpakọ. Otú ọ dị, mara na ihe, nke anaghị nwere mkwado, tensile ejighị n'aka. Dabere na ule results kpara nkata abụrụ nje nke etinyere ihe mgbalị. Nzipụta na-eme ka a mma nghọta. Ọ dịkwa mkpa ịma ihe mbụ modulus nke ekwedo nke ihe na ego nke deformation.

N'okpuru ibu, deformation abawanye n'ihi na eziokwu na ihe nwere a onwunwe dị ka creep. Akpa, n'okpuru a ụfọdụ nsogbu, e emee agbanwe deformation. Ọ bụ a onu na nke ahu na-nkwarụ site a ibu-alaghachi mbụ ya ụdị mgbe ya ofufe. Mgbe ahụ, mgbe n'ihu ibu ke ihe-amalite ime, irreversible (plastic) deformation. Otú ọ dị, kewaa plastic na-agbanwe agbanwe nnọọ ike. N'ihi na ozugbo mgbanwe ke udi na-adabere na-agba nke na ibu na-abawanye. N'ihi nke a deformation n'oge ibu abawanye a na-akpọ na-agbanwe, na a n'ihu na-abawanye na deformities - plastic. Ọ bụ n'ihi na creep nke ihe. Ọzọkwa deformation bụ ugbua mbibi nke ihe. Nke a modulus nke ekwedo nke ihe a na-emekarị na-akpọ modulus nke deformation. Ọ na-ekpebisi ike iji dị iche iche usoro.

Modulus nke ekwedo nke ihe kpebisiri ike site na mbụ nnọọ ike. Otú ọ dị, ya ndika uru nwere ike ịtọ udiozi. Ọtụtụ chaatị dị iche iche secant akara na usoro, na-atụgharị uche na na nduzi nke ndị nchegbu-nje, mgbe mgbe, ọ dị, ọ bụghị mgbe niile, ẹbiet na tangent, nke na-aga site na mbido.

Dịtụ kwesịrị ntụkwasị obi na-ekwu na ihe modulus nke ekwedo enwekwu kpọmkwem hà ka mgbọrọgwụ nke ume ya. Otú ọ dị, nke a bụ eziokwu naanị maka isi akụkụ nke eserese (nchegbu-nje) na-adabere na gburugburu ebe obibi na ule ọnọdụ. Dị ka ihe atụ, ụdị nke mmiri-jupụta ihe onwunwe na ule nwere a ukwuu modulus nke ekwedo index karịa akọrọ n'omume. Ọ bụ ezie na ike ha Njirimara ndị yiri.

Na modulus nke ekwedo ukwuu emetụta àgwà nke ntụ nchịkọta. Nke a na nduzi bụ rectilinear. Kwesịrị ịdị, ọnụ ọgụgụ nke fechaa ihe ga-ala karịa arọ n'omume. The ekwedo na-enwekwu na afọ nke ihe. Ka ihe atụ, modulus nke ekwedo nke ihe B25, ga-elu otu afọ karịa ka ọ dị na mbụ, ma mgbe afọ 10, ọ ga-eto eto ọbụna karị. Iji chọpụta kwa nke ekwedo e a pụrụ iche table, nke na-egosi kpọmkwem mbụ modulus nke ihe onwunwe nke onye ọ bụla ika.