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(1) The hydroforming process is very repeatable.

(2) Hydroforming is a new technology of sheet metal forming, and is very suitable for the manufacturing of complex parts such as automobile panels and motorcycle oil box.

(3) The technology of tube hydroforming is new and has still many problems need to be studied.

(4) The hydroforming of bulging in the middle of a tube was studied.

(5) Tube hydroforming as an innovative process was more and more widely used in automobile industry recently.

(6) Sheet hydroforming has proven to be an effective method for manufacturing complicated parts.

(7) With superior control over forces and motions, Interlaken's Hydroforming Press provides a greater overall quality of formed parts.

(8) The hydroforming of Abnormity Tube can carry through in common hydraulic press or special hydroforming press.

(9) Sheet warm forming process, sheet warm hydroforming process and sheet press forging process are introduced in this paper.

(10) Tailor-welded tubes (TWTs) are more and more used in tube hydroforming due to its low cost, high productivity, high quality and varieties in products.

(11) Relationship and control of axis sealing and internal pressure directly affects deformation process in tube hydroforming.

(12) In order to solve the crack problem of curved hollow components during hydroforming(http://sentencedict.com/hydroforming.html), a front chassis frame was taken as an example and the effect of three bending angles of 0.

(13) The analytic formula of the feeding zone thickness distribution in hydroforming of variational cross-section tube is derived by using the total strain theory.

(14) By using non-linear finite element theory, a non-linear finite element model for hydroforming for rear axle housing is established.

(15) To ensure the calculation precision and efficiency of the tube hydroforming process when using the dynamic explicit FEM , the effect of the virtual loading time was taken into account herein.

(16) For one thing, ERC/NSM, which he helped establish in 1986, has organized a consortium of 31 companies that is working on developments in tube hydroforming.

(17) It hope that provide theoretical information and use for reference experiences for applying the hydroforming technology of automotive subframe on the industry of automotive components in China .

(18) The paper describes the present research status and tends in stamping FEM simulation, tube hydroforming, viscous medium pressure forming and sheet formability are studied.

(19) It is important to design the loading path correctly during the tube hydroforming process.

(20) In this paper, The application of tailor welded tubes in hydroforming was discussed. And the difference between laser welded tubes and electrical resistance welding was compared.

(21) The influence of coefficient of average normal anisotropy on hydroforming is discussed.