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Viewing 1 to 18 of 18
2011-04-12
Technical Paper
2011-01-1119
Sandeep Chandrakant Kulkarni, Matthew Marks
An automobile is designed to meet numerous impact events, including frontal impact, side impact, rear impact, and roll over. Roof crush resistance is a test defined by Federal Motor Vehicle Safety Standard (FMVSS) 216. The intent of this test is to evaluate the strength of the roof and supporting body structure during a vehicle rollover. Steel countermeasures are typically used as structural-reinforcing elements to the body structure to improve the crush strength of a vehicle roof. This paper presents a thermoplastic countermeasure (CM) design as a light-weight solution to replace traditional steel countermeasures. Two concepts are discussed in the paper: an all-plastic countermeasure and a plastic/metal hybrid countermeasure consisting of stamped steel with a thermoplastic reinforcing rib structure. Finite Element (FE) methods using LS-DYNA are used to evaluate the performance of these countermeasure concepts.
2011-04-12
Technical Paper
2011-01-0023
Subrata Nayak, Ankit Garg, SM Kumar, Narasimhan Krishnamoorthy, Manish Chaturvedi, Matthew Marks
Automotive steering wheels, which play an important role as a human machine interface, are evolving over time with numerous integrations and innovations. Thermoplastic steering wheel, one of the innovations in recent times, offers significant reduction in mass along with part integration and styling flexibility and is an excellent replacement to traditional metal armature steering wheels. Typical steering wheels need to meet many performance requirements before they enter production. With the advancement of computational mechanics and increase in computational capabilities, it has become much easier to evaluate and optimize steering wheel performance in different ways. Instead of manufacturing and running prototype tests, steering wheel designs can be modeled and optimized virtually in various scenarios using standard finite element analysis technique, thus facilitating faster development cycle.
2010-04-12
Technical Paper
2010-01-0916
Subrata Nayak, Ankit K. Garg, Manish Chaturvedi, Ted Wieczorek, Matthew Marks
Automotive steering wheel (SW) is generally manufactured with metal armature and polyurethane / polypropylene (PU / PP) overmolding. The metal armature is used to provide structural stiffness and strength while PU / PP foam gives shape, touch and feel. Developed market use cast Magnesium or Aluminum as armature material, however emerging markets use steel for armature construction. With additional requirements (airbag integration, functional integration, aesthetics, compact and light weigh) being added to steering wheel, the steering wheel design is becoming more and more complex in nature. Thermoplastic SW offers competitive stiffness, impact, ductility and chemical resistance characteristics needed for the global automotive markets. A thermoplastic SW had been developed from a unique recyclable polycarbonate.
2010-04-12
Technical Paper
2010-01-1009
Dhanendra Kumar Nagwanshi, Manish Chaturvedi, Sudhakar Marur, Kent Allen
Improving passenger car damageability has been an important topic for The Insurance Institute for Highway Safety (IIHS) and the Research Council for Automotive Repairs (RCAR) council. Incorporation of new IIHS/RCAR barrier (Rigid bumper shaped barrier fitted with an energy absorbing material and cover) in ‘Bumper Structural Test protocols’ closely replicates the damage patterns observed in real world low-speed crashes. Inclusion of new IIHS/RCAR barrier impact (10kmph speed) test, along with IIHS and RCAR bumper test protocols, redefines the development of countermeasures for low speed damageability. In this paper an innovative cost effective, and lightweight, hybrid bumper beam solution is proposed with thermoplastics and steel, to meet IIHS and RCAR impact requirements including new IIHS/RCAR barrier impact test protocols.
2012-04-16
Technical Paper
2012-01-0650
Anju Baroth, Sreepadaraj karanam, Robert McKay
Global warming and climate change are among the top subjects of growing global concern. According to International Energy Agency (IEA), about 19% of the greenhouse gas emissions from fuel combustion are generated by the transportation sector, and its share is likely to grow. A forecast by US Census Bureau predicts that there will be 3.5 billion cars by 2050 for a population of 9 billion. In this context, numbers in the industrialized world are expected to double from around half a billion to over one billion. An increase in fleet volume will have a direct and major impact on increase of CO₂ emissions. Therefore, reducing vehicle fuel consumption is one of the most critical steps for reducing greenhouse gas emissions, and reduction of vehicle weight is one of the best solutions for improving fuel efficiency.
2012-04-16
Journal Article
2012-01-0266
Triloka Tankala, Poovanna TK, Arunachala p, Russell Bloomfield, James Wilson
A headlamp reflector has many performance requirements. Principal among these is the need to deliver a compliant beam pattern while withstanding a severe heat environment. In serving this requirement, the reflector must reliably secure the light source (bulb filament) relative to the optical prescription (facets) of the reflector. Traditionally, achieving this performance requirement has been challenging since the reflector elements which are designed to deliver stable and reliable optical performance, are the same elements which must also withstand thermal stresses and adjustment-related static stresses within the reflector. The integrity of these optical elements may also be limited by surface sink, especially in the bulb fastening and attachment locations. The current work describes the design of a reflector bracket through which these forces can be minimized and accommodated while delivering robust optical performance.
2008-04-14
Technical Paper
2008-01-1339
Eric Jaarda, Manish Chaturvedi, Ted Wieczorek, Amy Meyers, Ravi Chitteti
Automobile manufacturers, designers, and cockpit system integrators are in constant search of solutions that reduce the number of interruptions across interior surfaces. Engineers require that this solution be efficient in terms of reliability, parts complexity, packaging space, and cost. The purpose of this paper is to describe the design and development of a cost effective, simplified seamless passenger airbag door system with an integrated chute for instrument panels. Through engineering thermoplastic material property advantages and scoring designs, this solution has a construction which may meet both styling and performance criteria while eliminating component parts such as a separate airbag chute, hinges, tethers, brackets, inserts, fabrics, and fasteners.
2011-01-19
Technical Paper
2011-26-0116
Subrata Nayak, Ankit Garg, S. M. Kumar, Manish Chaturvedi
Automotive industry is looking for weight out options to increase the fuel efficiency of automobiles. Thermoplastics usage is increasing to reduce the dead weight of different automotive components. Traditional steering wheel can be replaced with thermoplastic to make it lighter without compromising its performance requirements. Thermoplastic steering wheel offers overall reduction in cost as well as significant reduction in mass. In addition, thermoplastic steering wheel also offers part integration and styling flexibility. As steering wheel has to meet variety of loading criteria (vibration, static loading, dynamic loading and fatigue), the overall design is a multi objective optimization process. Major challenges of thermoplastic steering wheel are to design the effective model for any particular wheel geometry domain defined by OEM's (Original Equipment Manufacturer) styling studios.
2011-04-12
Technical Paper
2011-01-0544
Dinesh Mana, Dhanendra Nagwanshi, Matthew Marks, Arunachala P
High repair cost and the subsequent increase in insurance cost in a highly competitive automobile market have forced every automobile original equipment manufacturer (OEM) to comply with the FMVSS and ECE-42 regulatory requirements of low-speed vehicle damageability. Although, the terminologies used are different, similar regulatory requirements also exist in Asia-pacific region. At the rear side, reducing the damage to expensive vehicle components in a low-speed pendulum impact or a low-speed barrier impact can attain a good rating for low-speed vehicle damageability. This paper focuses on a detailed study of various lightweight plastic rear beam designs and their effectiveness in reducing the damage to the vehicle during low-speed vehicle-to-vehicle collision or vehicle to barrier collision.
2010-04-12
Technical Paper
2010-01-0232
Narendra Hardikar, Khandelwal Ratnesh, Venkatesha N, Geert Jan Doggen
This paper presents a Finite element analysis (FEA) methodology to predict the behavior of an automotive thermoplastic fender subjected to the e-coat paint bake cycle. Such a methodology, essential for an optimum fender design involves solution of a thermo-viscoelastic problem whose solution is not yet reported in literature. This FEA methodology employed in the early design phase would help in the development of an optimum thermoplastic fender and support strategy. It is shown with help of a case study that the efficacy of different support combinations and their effect on final fender deformations can be predicted virtually very early in the design phase. While this paper presents the methodology and its application using the example of a large body panel (BP) like fender, it can easily be applied for predicting the response of other thermoplastic parts like tailgate and tank flap during the paint cycle.
2010-04-12
Technical Paper
2010-01-0231
Ashok K Kancharla, Narendra Anand Hardikar, Triloka C Tankala, Geert Jan Doggen
This paper is motivated by the need to predict deformation behavior of an automotive thermoplastic fender during its residence in e-coat paint bake oven where it is heated by convective currents from blowers. Part - 1 [ 1 ] of this paper, presented a FEA methodology to model the behavior of thermoplastic fender during ecoat bake. Additionally a multiphysics computational procedure to include effect of temperature and stress history was also proposed to enhance the accuracy of the solution. In this paper, we focus on the prediction of temperature history and its influence on fender deformation. Towards this, we present a two-stage thermo-mechanical simulation procedure utilizing CFD and FEA to model the ecoat bake process. While the procedure can model the heating of the fender by convective currents from blowers using CFD, the required flow field data of the ecoat oven is highly confidential.
2012-05-09
Article
SABIC Innovative Plastics expands its Lexan polycarbonate portfolio with three new engineered film grades to help satisfy the growing demand for cost reduction, greater design flexibility, higher performance, and compliance with global environmental regulations.
2008-10-13
Article
After being showcased on two recent concept vehicles, a hybrid thermoplastic composite gets its commercial launch as the first SABIC Innovative Plastics and Azdel-developed grade appropriate for offline painting, with future grades intended for uses in online painting operations.
2010-12-29
Article
Operating at 110 V, Leviton Manufacturing’s Evr-Green electric vehicle (EV) cord set is a portable unit that enables consumers to recharge their battery-powered EVs at home or wherever there is an available 110-V/15-A receptacle.
2010-04-16
Article
Lee Spring's LeeP plastic composite springs are molded from SABIC Innovative Plastics’ durable Ultem brand resin.
2010-05-10
Article
Designed to answer customer requests for better, longer-lasting LED life and improved efficiency, SABIC Innovative Plastics’ Expression 2011 palette features an array of resin colors and special effects for LEDs.
2013-02-08
Article
SABIC Innovative Plastics worked with Rottne Industry to supply a high-performance glazing material for the windshields and windows of its harvesters and forwarders. Margard MR5E sheet offers the best optical properties of the Lexan polycarbonate product line.
2009-04-30
Article
SABIC Innovative Plastics’ polycarbonate glazing technology offers greater design freedom, higher performance, and lighter weight than traditional glass.
Viewing 1 to 18 of 18

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