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All Journal Journal of Engineering and Technological Sciences Journal Integration of Social Studies and Business Development
Mohammad Rusyad Salim
Faculty Of Mechanical And Aerospace Engineering, Institut Teknologi Bandung
Humanities Decision Sciences, Operations Research & Management Engineering Social Sciences

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Crashworthiness Design for an Electric City Car against Side Pole Impact Setiawan, Rachman; Salim, Mohammad Rusyad
Journal of Engineering and Technological Sciences Vol 49, No 5 (2017)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2017.49.5.3

Abstract

Electric vehicles are increasingly popular as an alternative to fossil fuel vehicles. The presence of batteries and electric motors poses different risks in collision accidents. The deformation of the batteries could spark a fire or explosion that in turn could endanger the passengers. The prototype of an Indonesian electric city car is currently being developed, which includes a battery pack located underneath the passenger compartment and electric motors in the front compartment. A crashworthiness design against side pole impact, in accordance with the Euro NCAP standard, was simulated numerically. In order to reduce the risk of battery explosion, an impact energy absorbing structure is proposed for implementation at the sides of the batteries. The structure of the four-passenger hatchback electric city car was modeled using all-shell elements with material properties for common automotive application and analyzed using the finite element method with dynamic plasticity capability. For the preliminary design, the minimum deformation of the batteries that can cause battery explosion was used as the failure criteria. From a number of design alternatives, the use of aluminum foam as impact energy absorber produced sufficient protection for the battery pack against side pole impact, hence effectively reducing the risk to an acceptable limit.
Crashworthiness Design for an Electric City Car against Side Pole Impact Rachman Setiawan; Mohammad Rusyad Salim
Journal of Engineering and Technological Sciences Vol. 49 No. 5 (2017)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2017.49.5.3

Abstract

Electric vehicles are increasingly popular as an alternative to fossil fuel vehicles. The presence of batteries and electric motors poses different risks in collision accidents. The deformation of the batteries could spark a fire or explosion that in turn could endanger the passengers. The prototype of an Indonesian electric city car is currently being developed, which includes a battery pack located underneath the passenger compartment and electric motors in the front compartment. A crashworthiness design against side pole impact, in accordance with the Euro NCAP standard, was simulated numerically. In order to reduce the risk of battery explosion, an impact energy absorbing structure is proposed for implementation at the sides of the batteries. The structure of the four-passenger hatchback electric city car was modeled using all-shell elements with material properties for common automotive application and analyzed using the finite element method with dynamic plasticity capability. For the preliminary design, the minimum deformation of the batteries that can cause battery explosion was used as the failure criteria. From a number of design alternatives, the use of aluminum foam as impact energy absorber produced sufficient protection for the battery pack against side pole impact, hence effectively reducing the risk to an acceptable limit.
Stock Valuation of PT Indika Energy Tbk: Impact of Net Zero Emission Transition Mohammad Rusyad Salim; Sumirat, Erman Arif; Sukarno, Subiakto
Journal Integration of Social Studies and Business Development Vol. 1 No. 2 (2023)
Publisher : Integrasi Sains Media

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58229/jissbd.v1i2.121

Abstract

Climate change drives countries and the private sector to reduce their emission. Investors are becoming aware of sustainability issues and are more likely to prioritize companies demonstrating strong ESG. Adapting to this condition, coal mining companies in Indonesia are improving their ESG performance, one of which is PT Indika Energi Tbk (INDY). As one of the biggest mining companies in Indonesia, INDY has carried out sustainability initiatives and made it one of the companies with the best ESG scores compared to its competitors. However, Indika Energy's good ESG performance was not followed by its good stock performance. This phenomenon initiated the author to analyze how the business transition to low-carbon and Net Zero Emission (NZE) development by INDY will affect the stock valuation. The valuation was based on the Discounted Cash Flow (DCF) method, forecasting ten years of future financial statements considering the company's past performance and strategy. The evaluation was conducted under the Business-As-Usual (BAU) and the NZE Transition Scenario. The author also calculates relative valuations to achieve a more thorough and robust assessment of company value. Based on the DCF method, the intrinsic value of INDY is Rp 2,899 and Rp 2,726 per share for BAU and the NZE Transition Scenario, respectively, while the market price of a share is 1,910 as of the end of Jun-23, which indicated that current share price is undervalued. Therefore, it is recommended that investors buy INDY stock at the current price. The results also showed that the company's diversification strategy did not increase the value of its shares. This outcome might be attributed to the lack of strong incentives from the government or the capital market for supporting sustainable business practices. The company should take the initiative to increase the value, optimize capital structure, and assess assets.
Co-Authors Rachman Setiawan Setiawan, Rachman Subiakto Sukarno Sumirat, Erman Arif