Finite Element Simulation for Design Verification of a Small Size Split Hopkinson Pressure Bar

Dyab, Mohamad; Matin, Payam; Jin, Yuanwei

doi:10.1115/detc2013-13716

Cited by 1 publication

(4 citation statements)

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“…More elaborative details may be found in previous publications [9][10]. As shown in Figure 2, the setup designed included the following major components:…”

Section: Apparatus Design Backgroundmentioning

confidence: 99%

“…Finite element simulation was also utilized to verify the performance of the entire apparatus assembly during a high speed deformation testing. For this purpose, the dynamics impact between the striker and incident bar, and subsequent impacts with the specimen and the transmitter bar were simulated using finite element in ABAQUS [9][10].…”

Section: Phase 2: Design For the Pressure Needed For The Systemmentioning

confidence: 99%

“…The values listed in Table 2 are considered for the SHPB experiment for validation purposes. The SHPB testing is conducted based on the procedure explained in [10]. The experimental data are collected in the form of strain signals and recorded successfully by the data collection subsystem.…”

Section: Testing and Validation Of Entire Data Acquisition Systemmentioning

confidence: 99%

“…In the previous work in the authors' institution, a team of undergraduate engineering students were engaged to utilize the fundamentals of mechanics along with Finite Element Simulation to design a small size low-cost SHPB for instructional purposes [9][10]. A working prototype of the setup designed was built.…”

Section: Introductionmentioning

confidence: 99%

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Designing a Data Acquisition System for a Split Hopkinson Pressure Bar

Kirby¹,

Ejenavi²,

Matin³

2015 ASEE Annual Conference and Exposition Proceedings

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Senior students are always challenged to apply their engineering knowledge and research skills gained from an engineering curriculum toward design and implementation of challenging senior design projects. Split Hopkinson Pressure Bar (SHPB) is an apparatus that is used to study materials behavior under high speed deformation, where strain rate is very high. Hopkinson bars are usually custom made based on the needs of customers, who are mostly researchers in universities or research labs. In this work, in a form of a senior design project, the authors provided learning opportunities for engineering students to design a data acquisition system for a small size split Hopkinson pressure bar previously designed by former students. The objectives of this project are to engage a team of students 1) to design a data acquisition system using National Instrument hardware and Labview to collect strain data during high speed deformation testing 2) to design a data processing program to process the strain data collected to stress-strain graph 3) to conduct a number of high speed deformation material testing to validate the performance of the data acquisition system designed.Students implemented the fundamentals of instrumentation, graphical programming, computational methods and solid mechanics to design the data acquisition system for a SHPB. A working prototype of the data acquisition system is integrated and tested. Preliminary tests demonstrate that the performance of the system is as desired. In this paper, the authors elaborate on how the students have utilized the engineering knowledge acquired throughout the course to design and develop the data acquisition system for the Hopkinson Split Pressure Bar and thus the educational gains achieved. IntroductionMaterial properties are the starting block for the design of most structures. Mechanical structures undergo a wide range of loading conditions. Structures can be loaded statically or dynamically with a wide range of strain rates. With impact loading with high strain rates, the relationships between stress and strain are not the same as when a material is subjected to static loading. It has been observed that material properties are dependent upon the rate at which it is deformed. Many investigators have studied the effect of high compressive strain rate loading conditions, in metals, wood, bones and other materials. The most common method for determining the dynamic response of materials is to use Split Hopkinson Pressure Bar (SHPB) [4].

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“…More elaborative details may be found in previous publications [9][10]. As shown in Figure 2, the setup designed included the following major components:…”

Section: Apparatus Design Backgroundmentioning

confidence: 99%

Section: Phase 2: Design For the Pressure Needed For The Systemmentioning

confidence: 99%

Section: Testing and Validation Of Entire Data Acquisition Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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