?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=ANALISIS+TEGANGAN+DAN+EKSPANSI+VOLUME+TANGKI+TOROIDAL+PENAMPANG+ELIPTIK+DENGAN+BEBAN+INTERNAL+PRESSURE&rft.creator=MADE+YOGA+ADI+WINATA%2C+1015021043&rft.subject=+&rft.description=abstrak+indonesia%0D%0ADalam+mengurangi+subsidi+dari+bahan+bakar+minyak+(BBM)%2C+pemerintah+Indonesia+telah+menggalakkan+program+konversi+bahan+bakar+minyak+ke+bahan+bakar+gas+(BBG).+Untuk+mendukung+program+ini%2C+diperlukan+pengembangan+komponen+dari+sistem+pembakarannya.+Salah+satu+komponen+adalah+tangki+untuk+penyimpanan+BBG+yang+harus+dirancang+dengan+baik+untuk+menghindari+terjadinya+ledakan+akibat+kegagalannya.+Berdasarkan+penelitian+sebelumnya%2C+tangki+toroidal+dapat+menahan+limit+tekanan+yang+lebih+tinggi+dari+tangki+penyimpanan+PERTAMINA+3kg+yang+digunakan+saat+ini+dalam+rumah+tangga.+Penelitian+ini+diperluas+dengan+merubah+penampangnya+menjadi+eliptik.+Kekuatan+dalam+limit+tekanan+dievaluasi+secara+numerik+dengan+menggunakan+sofware+ANSYS+13+yang+berbasis+metode+elemen+hingga.+Jenis+elemen+ANSYS+yang+digunakan+adalah+SHELL+181.+Limit+tekanan+yang+diperoleh+melalui+analisis+nonliniers+menggunakan+alogaritma+Newton-Raphson+dan+sesuai+dengan+tegangan+dan+regangan+yang+dievaluasi.+Hasil+penelitian+menunjukkan+bahwa+tangki+toroidal+memiliki+rasio+jari-jari+(R%2Fr)+1%2C0+(lingkaran)+dapat+menahan+limit+tekanan+tertinggi%2C+baik+untuk+in-plane+maupun+out-plane+yaitu+1%2C16+kali+tekanan+yield+nya+(py).+Penambahan+dari+nosel+pada+bagian+intrados+mengakibatkan+penurunan+limit+tekanan+sebesar+5%2C21%25+yaitu+menjadi+1%2C1+py.+Hasil+ekspansi+volume+terjadi+ketika+limit+tekanan+dicapai+adalah+0%2C337%25+dari+volume+awal.+Hal+yang+perlu+diperhatikan+untuk+dicatat+adalah+limit+tekanan+menjadi+lebih+rendah+dari+tekanan+yieldnya+ketika+rasio+sumbu+panjang+dan+sumbu+pendek+(a%2Fb)+dari+eliptik+lebih+dari+1%2C4.+Pada+kesimpulannya%2C+nilai+perbandingan+eliptik+a%2Fb+tidak+boleh+lebih+tinggi+dari+1%2C4+untuk+pengembangan+lebih+lanjut+dari+sebuah+tangki+toroidal.%0D%0AKata+kunci%3A+tangki+toroidal%2C+limit+tekanan%2C+ekspansi+volume%2C+penampang+eliptik%0D%0A%0D%0Aabstract+inggris%0D%0AIn+under+to+reduce+the+public+service+obligation+(PSO)+on+oil+fuel%2C+the+goverment+of+Indonesia+initianted+a+program+of+conversion+of+oil+fuel+into+gas+fuel+(BBG).+To+support+this+program%2C+it+is+required+to+develop+the+component+of+combustion+system.+One+of+the+components+is+strorage+tank+for+BBG.+Based+on+previous+research%2C+a+toroidal+tank+can+withstand+higher+limit+pressure+the+pertamina+LPG+3+Kg+used+nowadays+in+Indonesia+household.+The+present+study+was+exstended+for+toroidal+tank+of+elliptic+cross-section.+The+strenght+in+term+of+limit+pressure+was+evaluated+numerically+using+the+ANSYS+13+finite+element+software.+The+ANSYS+shell+181+element+type+was+used.+Limit+pressure+were+obtained+via+nonlinier+analysis+using+the+well-known+Newton-Raphson%2C+and+corresponding+stress+and+strain+were+evaluated.+The+result+shows+that+toroidal+tank+having+radius+ratio+(R%2Fr)+of+1.0+(circular)+withstand+highest+limit+pressure%2C+both+for+in-plane+and+out-of-plane+elliptic%2Ci.e.%2C1.16+times+the+pressure+to+yield+(py).+Attachment+of+a+nozzle+on+intrados+result+in+reducing+the+limit+pressure+by+5.21%25%2C+become+1.1+py.+The+result+of+corresponding+volume+expansion+when+the+limit+pressure+was+reached+is+0.337+%25+of+the+initial+volume.+It+was+interesting+to+not+that+limit+pressure+become+lower+than+the+pressure+to+yield+when+the+ratio+of+major+to+minor+of+the+elliptic+higher+than+1.4.+In+conclusion+the+value+of+ellipticity+a%2Fb+must+not+be+high+than+1.4+for+further+development+of+a+toroidal+tank.%0D%0AKeywords%3A+toroidal+tank%2C+limit+pressure%2C+volume+expansion%2C+elliptic+cross-section&rft.publisher=Fakultas+Teknik&rft.date=2014-09-25&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5382%2F1%2FAbstract.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5382%2F2%2FAbstrak.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5382%2F3%2FCover%2520dalam.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5382%2F4%2FHlm.%2520Persetujuan.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5382%2F5%2FHlm.%2520Pengesahan.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5382%2F6%2FPernyataan.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5382%2F7%2FRiwayat%2520Hidup.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5382%2F8%2FPersembahan.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5382%2F9%2FSan%2520Wacana.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5382%2F10%2FDaftar%2520Isi.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5382%2F11%2FDaftar%2520Tabel.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5382%2F12%2FD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