Fihirisar Nakasawa

Fihirisar nakasawa ma'auni ne da ke ƙayyadad da yanayin sarrafawa a ƙarƙashin abin da sauye-sauyen lokaci ko matakan lodawa ke faruwa a cikin m. Yana da amfani don kimanta hulɗar taurin roba tare da viscoelastic^[1] ko halayen gajiya.^[2]

Idan nakasawa yana dawwama yayin da kaya ke bambanta, ana cewa tsarin ana sarrafa nakasa. Hakazalika, idan ana ɗaukar kaya akai-akai yayin da nakasar ta bambanta, ana cewa tsarin ana sarrafa kaya. Tsakanin matsananciyar nakasawa da sarrafa kaya, akwai nau'ikan hanyoyin sarrafawa na tsaka-tsaki gami da sarrafa makamashi.

Misali, tsakanin mahadi biyu na roba tare da halayen viscoelastic iri ɗaya amma taurin kai, wanne fili ne aka fi so don aikace-aikacen da aka bayar? A cikin aikace-aikacen sarrafa iri, ƙananan robar mai taurin zai yi aiki a ƙaramin damuwa don haka yana samar da ƙarancin dumama. Amma a cikin aikace-aikacen sarrafa danniya, robar taurin mafi girma zai yi aiki a ƙananan nau'i don haka yana samar da ƙarancin dumama. A cikin aikace-aikacen sarrafa makamashi, mahadi biyun na iya ba da adadin dumama danko. Zaɓin da ya dace don rage girman dumama don haka ya dogara da yanayin sarrafawa.

Tarihi

Shingo Futamura ne ya gabatar da sigar asali, wanda ya lashe lambar yabo ta Fasaha ta Melvin Mooney don sanin wannan ci gaba. Futamura ya damu da tsinkayar yadda canje-canje a cikin ɓarna na viscoelastic ya shafi canje-canje zuwa taurin fili. Daga baya, ya tsawaita aiwatar da hanyar da za a sauƙaƙa ƙayyadaddun ƙididdiga masu ƙayyadaddun abubuwa na haɗuwa da yanayin zafi da na inji a cikin taya.^[3] William Mars ya daidaita tunanin Futamura don aikace-aikace a cikin nazarin gajiya.

Tsarin Analogy zuwa polytropic

Ganin cewa ƙila za a iya rubuta fihirisar naƙasa a cikin nau'i mai kama da algebra, ana iya cewa ma'anar nakasawa ta wata ma'ana ce ta kwatankwacin ma'aunin polytropic don tsarin polytropic.

Manazarta

↑ Futamura, Shingo (1 March 1991). "Deformation Index—Concept for Hysteretic Energy-Loss Process". Rubber Chemistry and Technology. 64 (1): 57–64. doi:10.5254/1.3538540. Retrieved 4 August 2022.
↑ Mars, William V. (1 June 2011). "Analysis of Stiffness Variations in Context of Strain-, Stress-, and Energy-Controlled Processes". Rubber Chemistry and Technology. 84 (2): 178–186. doi:10.5254/1.3570530. Retrieved 19 August 2022.
↑ Futamura, Shingo; Goldstein, Art (2004). "A Simple Method of Handling Thermomechanical Coupling for Temperature Computation in a Rolling Tire". Tire Science and Technology. 32 (2): 56–68. doi:10.2346/1.2186774. Retrieved 7 October 2022.

[1] Futamura, Shingo (1 March 1991). "Deformation Index—Concept for Hysteretic Energy-Loss Process". Rubber Chemistry and Technology. 64 (1): 57–64. doi:10.5254/1.3538540. Retrieved 4 August 2022.

[2] Mars, William V. (1 June 2011). "Analysis of Stiffness Variations in Context of Strain-, Stress-, and Energy-Controlled Processes". Rubber Chemistry and Technology. 84 (2): 178–186. doi:10.5254/1.3570530. Retrieved 19 August 2022.

[3] Futamura, Shingo; Goldstein, Art (2004). "A Simple Method of Handling Thermomechanical Coupling for Temperature Computation in a Rolling Tire". Tire Science and Technology. 32 (2): 56–68. doi:10.2346/1.2186774. Retrieved 7 October 2022.

[1]

[2]

[3]