Analisis Respon Beam Terhadap Pembebanan Kendaraan Berjalan Dengan Pemodelan Setengah Mobil

Badriyah, Alinda Nurul (2016) Analisis Respon Beam Terhadap Pembebanan Kendaraan Berjalan Dengan Pemodelan Setengah Mobil. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Terdapat beberapa peristiwa rusaknya jembatan yang terjadi sebelum waktu yang telah diperkirakan sebelumnya. Salah satu hipotesis penyebab situasi ini adalah adanya getaran tambahan yang disebabkan oleh kendaraan besar seperti super long truck serta memiliki gaya yang sangat besar dan diteruskan atau ditransferkan ke jembatan. Panjang kendaraannya menyebabkan getaran tambahan karena perbedaan beda fasa dari ban depan dan ban belakang. metode yang digunakan untuk membuktikan hipotesa ini adalah simulasi untuk pemodelan sistem bridge-vehicle menggunakan program ANSYS Workbench 15.0. Terdapat tiga ketebalan yang digunakan yaitu tebal 2 meter, 1 meter, dan 0.5 meter. Sedangkan untuk variasi tumpuan, penulis memilih jenis fixed support, knife-edge support, dan slider support. Hasil simulasi menunjukkan bahwa terdapat tambahan getaran yang diteruskan oleh kendaraan akibat panjang kendaraan. Hal ini terbukti dengan adanya osilasi yang ditunjukkan pada setiap varian respon deformasi total; dari beam. Total deformasi terbesar terdapat pada jenis tumpuan slider support dengan ketebalan 0.5 meter, yaitu sebesar 1.08 mm pada waktu ke 1.12 detik. Ripple pertama muncul pada waktu ke 0.84 detik. =========================================================== There were several tragedies concerning damages of bridge which are seem to be sooner than the predicted period. One of hypothesis in this situation is an addition of vibration caused by long vehicle such as super long truck which has huge force transferred into the bridge and its long body causes more vibration due to phase difference of front and rear tire. The selected method which is used in this problem is using a simulation for modeling a bridge-vehicle system using half car vehicle model. The simulation is done using ANSYS Workbench 15.0 with some variation such us the thickness of beam and its supports. There are 3 kind of variation used in the thickness variety which are 2 m, 1 m, and 0.5 m. While in supports variation, we have fixed support, knife-edge support, and slider support. The results show that there is addition of vibration caused by long vehicle. It is proved by an oscillation which is showed in every response of beam’s total deformation. Highest total deformation is achieved in slider support beam of 0.5 thicknesses, 1.08 mm in 1.12 second. First ripple seen in responses is at 0.84 second. Meanwhile, response of knife-edge and fixed support beam show a similarity.

Item Type: Thesis (Undergraduate)
Additional Information: RSF 629.831 201 1 Bad a
Uncontrolled Keywords: beam, tumpuan, model setengah mobil, deformasi total, ANSYS Workbench 15.0
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TJ Mechanical engineering and machinery > TJ230 Machine design
Divisions: Faculty of Industrial Technology > Physics Engineering
Depositing User: EKO BUDI RAHARJO
Date Deposited: 22 Oct 2019 09:07
Last Modified: 22 Oct 2019 09:07
URI: https://repository.its.ac.id/id/eprint/71354

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