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.
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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: | http://repository.its.ac.id/id/eprint/71354 |
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