scholarly journals Finite Element Analysis of Cracked Flexible Pavements Embedded with Controlled Low-Strength Material Bases

2017 ◽  
Author(s):  
Te-Wen Tu ◽  
Her-Yung Wang ◽  
Li-jeng Huang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Flexible Pavements ◽  
Element Analysis ◽  
Strength Material ◽  
Low Strength ◽  
Controlled Low Strength Material

FINITE ELEMENT ANALYSIS OF CONTROLLED LOW-STRENGTH MATERIAL PAVEMENT BASES: STATIC ANALYSIS

2017 ◽  
Vol 4 (1) ◽  
Author(s):  
Li-Jeng Huang ◽  
Her-Yung Wang ◽  
Wen-Ling Huang ◽  
Ming-Chao Lin
Keyword(s):  
Finite Element ◽  
Static Analysis ◽  
Cross Section ◽  
Low Cost ◽  
Transverse Cross Section ◽  
Element Analysis ◽  
Sustainable Material ◽  
Strength Material ◽  
Low Strength ◽  
Controlled Low Strength Material

This paper presents static analysis of pavement bases constructed using sustainable material, a controlled low-strength material (CLSM), using finite element method (FEM). The CLSM concrete is introduced as pavement bases for its special features of easy compaction, high workability and relatively low cost. Rut-resistant stone matrix asphalt is placed on top of CLSM as wearing surface layer. The Young's moduli of CLSM are obtained from laboratory tests for two different binder mixtures, marked as CLSM-B80/30% and CLSM-B130/30%. Two-dimensional planar strain assumption is employed in the FE formulation of static analysis of the domain with 4-layered flexible pavement with different base materials. Longitudinal and transverse cross sections of pavements are analyzed using 720 rectangular Q4 elements. Emphasis is put on the settlement at the top surfaces of each layer as well as horizontal and vertical stresses induced by concentrated axle loads or uniform lane loads in longitudinal cross section and concentrated wheel loads in the transverse cross section using different materials for base layers. Numerical results show that the settlement and lateral pressure of CLSM bases are acceptable to assure the applicability of CLSM as a suitable sustainable material employed for pavement bases design and construction.

scholarly journals Pengembangan Konsep Desain dan Fabrikasi Mesin Penyortir Buah Duku (Lansium Parasiticum)

2020 ◽  
Vol 4 (2) ◽  
pp. 91-102
Author(s):  
Satriawan Dini Hariyanto ◽  
Rela Adi Himarosa ◽  
Andreas Brian Aditya ◽  
Sandy Hidayat ◽  
Eko Sulistyo Wibowo ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Yield Strength ◽  
Safety Factor ◽  
Step Method ◽  
Element Analysis ◽  
Strength Material

Pengembangan konsep desain mesin penyortir buah duku (Lansium Parasiticum) dilakukan menggunakan metode Five Step Method. Diperoleh tiga konsep mesin yang kemudian dipilih satu dari tiga konsep terbaik menggunakan metode product champion dilanjutkan dengan pembuatan desain 3D dan Finite Element Analysis (FEA) menggunakan software autodesk inventor 2017. Analisis FEA menunjukkan nilai von Misses stress sebesar 18 MPa bernilai lebih kecil dibanding yield strength material penyusun rangka sebesar 207 MPa, displacement yang terjadi sebesar 0,99 mm dengan nilai safety factor 15. Fabrikasi dan pengujian mesin menunjukkan nilai persentase keberhasilan proses penyortiran pada mesin lebih dari 85% dengan kapasitas sortir 400 kg/jam.

FINITE ELEMENT ANALYSIS OF CONTROLLED LOW STRENGTH MATERIAL PAVEMENT BASES: FREE VIBRATION ANALYSIS

2017 ◽  
Vol 4 (1) ◽  
Author(s):  
Li-Jeng Huang ◽  
Her-Yung Wang ◽  
Wen-Ling Huang ◽  
Ming-Chao Lin
Keyword(s):  
Finite Element ◽  
Free Vibration ◽  
Vibration Analysis ◽  
Natural Frequencies ◽  
Free Vibration Analysis ◽  
Crushed Stone ◽  
Mode Shapes ◽  
Strength Material ◽  
Low Strength ◽  
Controlled Low Strength Material

This paper presents free vibration analysis of pavement bases constructed using sustainable material, a controlled low-strength material (CLSM), using finite element (FE) method. The CLSM concrete is introduced as pavement bases for its special features of easy compaction, high workability and relatively low cost. Rut-resistant stone matrix asphalt is placed on top of CLSM as wearing surface layer. The Young's moduli of CLSM are obtained from laboratory tests for two different binder mixtures, marked as CLSM-B80/30% and CLSM-B130/30%. Two-dimensional planar strain assumption is employed in the FE formulation of steady-state elasto-dynamic analysis of four-layered flexible pavements in which four kinds of different base materials are considered: graded crushed stone, CLSM-B80/30%, CLSM-B130/30% and AC. Comparison study on computed natural frequencies and mode shapes of the flexible pavement using different bases materials will be conducted. Results show that CLSM pavement bases depict higher natural frequencies as compared with graded crushed stone bases and can be suitable sustainable materials employed for pavement design and construction in highway engineering.

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