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CASE STUDY
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Seismic Qualification of RTO System Base Using Finite Element Analysis Case Study Highlights The Client Industry : Industrial Air Pollution Control Systems Manufacturer Location : USA The Objective: Determining the structural integrity and performance characteristics of Regenerative Thermal Oxidizer (RTO) base under different seismic loading condition. The Solution: A finite element model for the RTO base was developed and modal analysis was first performed to extract first natural frequency of the base. Subsequently, seismic qualification was done using equivalent static analysis loading case, considering the first natural frequency and seismic spectrum. The results showed that the base design was safe to sustain the stresses during seismic events. The Challenges:
The Solution: After understanding the needs of the client it was decided to use ANSYS Mechanical to resolve the problem. Modal Analysis was carried out to extract first Natural Frequency of the RTO System Base. A Block Lancoz algorithm was used to find the first fundamental natural frequency. Seismic Analysis was performed using an Equivalent Static Analysis loading case. For this, the First Natural Frequency found out using Modal analysis was used in connection with the Spectrum to be analyzed for. The results obtained indicated that the RTO base of the client is safe under the conditions applied and used. The stresses produced under conditions were compared to the SSE allowable values and all components are safe from a strength point of view. The stiffened design of base ensures that the Base shall sustain the Loading during the specified Seismic Event.
Benefits: ? Easy validation of the base design with physical tests
? Requirement of accuracy in CAD model to ensure
comprehensive details on physical behavior of the RTO base during special loading conditions ? Determining accurate loading conditions and natural
frequency of the base to generate quality results for seismic qualification ? Ensuring FEA results accuracy to minimize physical
validation trials
due to results accuracy ? Cost reduction in design development due to reduced
physical test trials ? Client better understood the design behavior under
seismic events and provided room to implement changes for future custom design requirements
Being a global provider in developing industrial air pollution control systems, the client is into design, manufacturing, servicing and installation of thermal and catalytic oxidation technologies, as well as heat recovery systems for a variety of industrial applications. For their custom designed RTO systems for industry specific requirements, the base designed to support the system was required to be evaluated for performance and behavior under seismic events.
About Hi-Tech
Author: Gaurang Trivedi
Hi-Tech Outsourcing Services is a specialist firm providing engineering solutions to organizations across the globe. We have extensive experience in providing concept to manufacturing and post-manufacturing solutions to clients with a team of expert design engineers, CAD professionals and simulation analysts. We are based in India and USA, serving 24x6, with a world-class infrastructure, hardware and software capabilities to address complex engineering problems with least turn around time.
Outsourcing Services
Phone: +1-408-338-8047 Email: info@hitechcaddservices.com
Your Trusted Outsourcing Partner
Hi-Tech Outsourcing Services 547 Moreland Way Santa Clara, CA 95054
USA California 547 Moreland Way Santa Clara, CA 95054 Phone: +1-408-338-8047 E-Mail: sales@hitechos.com
New York, NY 50 Riverside Drive, New York, NY 10024 USA E-Mail: info@hitechos.com
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