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Viewing 1 to 30 of 142
2018-04-03
Technical Paper
2018-01-0627
Kenneth Cheong, Cliff Butcher, James Dykeman, Nicholas Qu
The development of stress-state dependent failure criteria for advanced high strength steel (AHSS) and aluminum alloys requires the accurate determination of failure under proportional loading conditions. Traditionally, the onset of localization or instability in proportional strain paths is performed under predominantly stretching conditions using Marciniak or Nakazima tests to construct a forming limit diagram (FLD). The FLD can then be converted into stress-space as a stress-based FLD for reduced strain path dependence or into plastic strain-stress triaxiality space for use with a phenomenological damage model. However, the onset of localization is strongly influenced by the presence of through-thickness stress and strain gradients as in bending operations or complex stretch-bending that occurs during the forming of complex components or during an automotive crash event.
2018-04-03
Technical Paper
2018-01-0626
Jiahui Gu, Hyunok Kim, Hua-Chu Shih, James Dykeman
Practical evaluation and reduction of edge cracking are very challenging issues in stamping AHSS for automotive body structures. In this paper, the effects of two key shearing parameters (the shear clearance and shear rake angle) to edge cracking were investigated with three different grades AHSS, TRIP780, DP980 and DP1180. Five different shear clearances were selected between 5% and 25% sheet thickness. The shear loads were compared and the shear edge quality was thoroughly characterized and compared. The shear peak load and the burr height increased from increasing the shear clearance. The sheared samples under different shearing conditions were tested using the Half Specimen Dome Test (HSDT). The HSDT created the edge forming limits as compared to the base material forming limit diagram. Load-displacement curve was measured using the load-cell and the strain distribution was measured during the test using a Digital Image Correlation (DIC) system during the test.
2017-10-30
Article
Honda motor company is a hybrid-car pioneer, but the company has been late to the battery-electric vehicle game.
2017-10-19
Article
The all-new, tenth-generation Accord is Honda's best-ever- and makes the case for why crossovers shouldn't take over the planet.
2017-10-17
Article
The development bogey for the new Honda Civic Type R was clear and simple in its scope if not its execution—beat the Nürburgring lap time of its predecessor.
2017-09-26
Article
"What we're driving" is Automotive Engineering's series of quick-strike vehicle reviews.
2017-09-23
Article
Today's internal combustion reality clashes with electric-drive promise at the 2017 Frankfurt auto show.
2017-09-14
Article
One of the most significant developments in internal combustion engine (ICE) technology for decades, Mazda’s innovative Skyactiv-X Spark Controlled Compression Ignition (SpCCI) combustion system is slated for production in 2018.
2017-09-07
Article
Emissions are diesel's perception problem; the best way to solve it is by coming clean on new-age emissions tests.
2017-08-22
Article
SAE International's Ground Vehicle Standards activity is recruiting industry participants for a Cooperative Research Project (CRP) for Safe and Interoperable Wireless Power Transfer (WPT) for charging hybrid and electric vehicles.
2017-06-13
Article
The body of the vehicle you're driving may be held together with more glue than welds.
2017-05-24
Article
Structural adhesives are gaining applications as engineers employ them with lightweight materials to help achieve a continuous bond for improved vehicle rigidity and other benefits.
2017-05-17
Article
Already Chevrolet's second best-selling model, the Equinox gets better by almost any measure with the all-new 2018 version.
2017-05-08
Article
American Formula One viewers squinting through bleary eyes at the live early-morning broadcasts from Europe have noticed changes to the sophisticated race cars for the 2017: they are visibly lower, wider and squatter-looking than last year’s cars.
2017-04-20
Article
A new state-of-the-art wind tunnel beginning construction in Ohio in 2017 will add to Honda's growing R&D footprint in the U.S.
2017-03-21
Article
Steady technology development and committed infrastructure investment combine to bring fuel-cell vehicles (FCVs) to the brink of mainstream applicability.
2017-03-21
Article
With the 2017 Clarity FCV, Honda gets serious about fuel-cell power and a hydrogen infrastructure.
2017-02-14
Article
The high cost of developing new technologies such as fuel cells is making partners out of competitors.
2017-01-24
Article
Vehicle transmissions are moving from six speeds a few years ago to the latest 10-speeds entering the market on a number of cars and light trucks for 2017.
2017-01-19
Article
Ten transmission ratios feel ideal in Ford's full-size pickup equipped with the 3.5-L V6 and the new 10R80 planetary automatic.
2017-01-18
Article
Developed in-house over a three-year period, Honda's new transaxle is the industry’s first production 10-speed for front-drive vehicles. It boasts a ratio spread of 10.1 and is set up for rapid skip-shifting.
2017-01-06
Article
Using a startup company's "optical microphone" to augment conventional speech recognition, Honda intends to improve the efficacy of speech-recognition technology.
2016-10-13
Article
As crossover utilities become more popular than sedans, Honda piles on the content and technology for its all-new, fifth-generation 2017 CR-V.
2016-09-17
Article
Ford hooks up its power-punching Ecoboost 2.7-L V6, all-wheel-drive and brilliantly tuned adaptive damping for the Audi-baiting 2017 Fusion Sport
2016-08-03
Article
Raising the octane level of pump gasoline in the U.S. is integral to optimizing advanced combustion engines now in development, said GM and Honda executives at the 2016 CAR Management Briefing Seminars in Traverse City, MI. Their comments prompted positive but non-committal comments from Chris Grundler, Director of the Office of Transportation and Air Quality for the U.S. EPA.
2016-05-15
Article
With the first-generation Honda Ridgeline, buyers weren't ready for a unibody pickup with odd styling. For the 2017 model, the design is normal—and unibody refinement might be a concept whose time has come.
2016-04-13
Article
Though battery-powered vehicles haven’t yet met predicted sales levels, leading automakers are bullish about the future, saying that newer generation vehicles now provide features and prices that will attract buyers.
2016-04-05
Journal Article
2016-01-0506
Daisuke Tomomatsu
Abstract This study developed technology for simultaneously welding heterogeneous resin tubes in order to weld and integrate resin tubes with two different specifications (low temperature and high temperature). The aim of integration was cost and weight reduction. The cost reduction due to reducing the number of parts exceeded the increase in material cost due to a change to resin materials. Base material fracture of the resin tubes was set as the breaking format condition, and the welding parameters of the joint part rotations and the friction time between the joint part and the resin tubes were specified as the weld strength judgment standard. In addition, the fused thickness determined by observing the cross-section after welding was specified as the weld quality judgment standard. The range over which weld boundary peeling does not occur and weld strength is manifest was clarified by controlling the welding parameters and the fused thickness.
2016-04-05
Technical Paper
2016-01-0488
Takashi Izawa, Motohiko Koushima
Abstract In order to determine the seizure limit of the main bearings of passenger vehicles under actual operating conditions, evaluations were conducted in environments containing noise factors (Various factors which designer cannot adjust and which make function vary were defined as noise factors in this paper.) [1,2] It was shown that noise factors have an effect on seizure limit performance in relation to performance under ideal test conditions (test conditions in which no noise is present). In relation to oil properties, the results showed that a reduction in viscosity as a result of dilution affected seizure limit performance. In relation to the shape of the sliding sections of the test shaft, seizure limit performance declined in a shaft in which the central section was swollen (“convex shaft” below).
2016-04-05
Technical Paper
2016-01-1321
Masahiro Fukazawa, Tsuyoshi Murao, Shingo Unigame
Abstract The CAE method to predict the vibration transfer function of the hydraulic engine mount on a vehicle with sufficient precision and calculation time without prototype cars was developed. The transfer function is given in the following steps. First, rubber deformation form under the power train weight loaded must be predicted. It’s obtained by using a reduction model of an engine mount, as a unit, which doesn’t have its fluid sealed inside, with the technique to get the static spring characteristics in a non-linear relationship. Second, Young’s modulus and structural damping coefficient for the deformed rubber must be given. As for these characteristics, ignoring the relations between these values and strain, the constant values are used. This considerably reduces computation time and model size. Next, the reduction model and the fluid model have must be combined to express actual product. In this step, coupled analysis for fluid and structure is used.
Viewing 1 to 30 of 142

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