Effectiveness evaluation for seat parts by seat belt anchorage strength analysis

Heo, Uk; Kim, Sunkyu; Song, MyungJun; Yang, In Young; Im, Kwang Hee

doi:10.1007/s12541-011-0137-1

Cited by 10 publications

(5 citation statements)

References 2 publications

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“…Dentro del método de elementos finitos el análisis topológico permite determinar aquellas propiedades de piezas que permanecen invariantes, cuando la pieza se pliega, expande, contrae o deforma, de manera que no aparecerán nuevos puntos, o se superpondrán diferentes puntos [4].…”

Section: Topología Por Método De Elementos Finitosunclassified

Analysis of the Structural Topology of the Interprovincial Bus Seats

Córdova

Remache

César

2022

espoch

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The study of mechanical engineering through computational technological advances allows having advantages in the design of prototypes of bus seats and other elements that make up the structure of the seats for interprovincial buses and thereby guarantees passengers’ safety and buses’ overall structural resistance. To avoid traffic accidents, it is vital to reduce the weight of the seats for saving fuel and improving the performance of the bus. Using the finite element method with the ANSYS Research software, it is proposed to optimize certain elements that make up the structure of the interprovincial bus seats and to comply with the R80 CEPE/UN regulation wherein the structural resistance of the seats must be evaluated according to the forces recommended by the regulation – critical forces, displacements, and the amount of absorbed energy. Under such conditions, various structural elements are optimized to simulate the seat again and validate the resistance through regulations recommended for this type of study. Keywords: seat, critical stresses, structural strength, optimize. Resumen El estudio de la ingeniería mecánica a través del avance tecnológico computacional permitió tener ventajas en el diseño de prototipos de autobuses, asientos y demás elementos que conforman la estructura de los asientos para servicio interprovincial y de esta forma se garantizó la seguridad de los pasajeros y resistencia estructural en caso de sufrir un accidente de tránsito, además fue importante reducir el peso de los asientos para ahorrar combustible y se mejoró el rendimiento del autobús por esta razón se utilizó el método de los elementos finitos con la aplicación del software ANSYS Research se propuso optimizar ciertos elementos que conforman la estructura del asiento interprovincial que debe cumplir con el reglamento R80 CEPE/ONU donde se evaluó la resistencia estructural de los asientos de acuerdo a las fuerzas recomendadas en la normativa y se analizaron esfuerzos críticos, desplazamientos, cantidad de energía absorbida, bajo estas condiciones se optimizaron varios elementos estructurales que fueron simulados es decir se validó la resistencia mecánica del asiento interprovincial mediante normativa recomendada para este tipo de estudios. Palabras Clave: asiento, esfuerzos críticos, resistencia estructural, optimizar.

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Section: Topología Por Método De Elementos Finitosunclassified

Analysis of the Structural Topology of the Interprovincial Bus Seats

Córdova

Remache

César

2022

espoch

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“…Las propiedades de los materiales utilizados en los componentes de los asientos se definieron en los modelos de materiales MAT ELASTIC y MAT PIECEWISE LINEAR PLASTICITY , este último permite definir el comportamiento en la zona elástica y plástica (Heo, Kim, Song, Yang, & Im, 2011). Estas propiedades se muestran en la Tabla 3.…”

Section: Procedimiento De Análisis De La Resistencia De Los Anclajesunclassified

Evaluación mediante software de la efectividad de los anclajes de cinturón de seguridad de un asiento comercial de autobús según la regulación ECE R14

Arroba

Núñez

2018

Enfoque UTE

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El cinturón de seguridad es un elemento importante para mantener al ocupante sujeto al asiento durante un accidente; sin embargo, si el anclaje del cinturón no resiste durante la colisión, el ocupante es expulsado del asiento, por tanto, es indispensable analizar su efectividad. El objetivo de este trabajo es evaluar la resistencia de los anclajes para cinturones de seguridad de dos y tres puntos de anclaje de un asiento comercial de autobuses, aplicando la Regulación de la Comisión Económica de las Naciones Unidas para Europa (ECE-R14). Las propiedades de los materiales de la estructura del asiento y de los anclajes del cinturón se obtuvieron mediante ensayos de tracción y flexión. Estos valores se utilizaron para elaborar un modelo de elementos finitos utilizando el material Piecewise Linear Isotropic Plasticity de Ansys – LsDyna. Los anclajes se evaluaron aplicando fuerzas en los bloques pélvico y torácico sujetos a través del cinturón según lo especificado en la regulación. En el análisis los anclajes presentaron grandes deformaciones llegando a la ruptura, modificando la forma y posición de los anclajes e incrementando refuerzos estructurales en áreas de mayor solicitación los anclajes cumplieron con la regulación. Este trabajo pretende crear una metodología para la industria de asientos que permita evaluar sus modelos previos a homologaciones.

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“…Rear seat restraint design optimizations were carried out to find the ranges of optimum restraint system configurations that offer the best safety guides for children [2]. Heo et al [3] suggested the minimum yield stress of the part which is connected to the upper rail and set-bracket and the rails which translocate the seat, as well as an evaluation procedure of seat belt anchorage in the finite element method. Kang and Chun [4] represented the modeling and analysis technique of seat belt anchorage, the seat track and the rear floor, to ensure the safety of the occupants in cases of front impact conditions.…”

Section: Introductionmentioning

confidence: 99%

“…20 times mass of seat assembly 2. FMVSS: Federal Motor Vehicle Safety Standard 3. ECE: Economic Commission for Europe 4.…”

mentioning

confidence: 99%

Enhanced Robust Design Optimization in Seat Belt Anchorage Strength for Front Crash Safety of Multi-Purpose Vehicle

Song

2021

Applied Sciences

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This paper deals with an enhanced robust design optimization (RDO) method and its application to the strength design problem of seat belt anchorage, related to the front crash safety of multi-purpose vehicles. In order to determine the rational design safety of the newly developed automotive part, such as the seat, in which the reliability of the evaluation data is not sufficient at the design stage, it is necessary to implement a probabilistic design considering uncertainties. Thickness size variables of the seat frame structure’s members were considered random design variables, including uncertainties such as manufacturing tolerance, which are an inevitable hazard in the design of automotive parts. Probabilistic constraints were selected from the strength performances of the seat belt anchorage test, which are regulated in Economic Commission for Europe (ECE) and Federal Motor Vehicle Safety Standard (FMVSS), and the strength performances were evaluated by finite element analyses. The RDO problem was formulated such that the random design variables were determined by minimizing the seat frame weight subject to the probabilistic strength performance constraints evaluated from the reliability analyses. Three sigma level quality was considered for robustness in side constraints. The mean value reliability method (MVRM) and adaptive importance sampling method (AISM) were used for the reliability analyses in the RDO, and reliability probabilities from the MVRM and the AISM on the probabilistic optimum design were assessed by Monte Carlo simulation (MCS). The RDO results according to the reliability analysis methods were compared to determine the optimum design results. In the case of the RDO with the AISM, the structure reliability was fully satisfied for all the constraint functions, so the most reliable structural safety was guaranteed for the seat frame design.

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Effectiveness evaluation for seat parts by seat belt anchorage strength analysis

Cited by 10 publications

References 2 publications

Analysis of the Structural Topology of the Interprovincial Bus Seats

Analysis of the Structural Topology of the Interprovincial Bus Seats

Evaluación mediante software de la efectividad de los anclajes de cinturón de seguridad de un asiento comercial de autobús según la regulación ECE R14

Enhanced Robust Design Optimization in Seat Belt Anchorage Strength for Front Crash Safety of Multi-Purpose Vehicle

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