CN104590397A - Section structure of lightweight car body and application method thereof - Google Patents
Section structure of lightweight car body and application method thereof Download PDFInfo
- Publication number
- CN104590397A CN104590397A CN201510012934.1A CN201510012934A CN104590397A CN 104590397 A CN104590397 A CN 104590397A CN 201510012934 A CN201510012934 A CN 201510012934A CN 104590397 A CN104590397 A CN 104590397A
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- interlayer
- vehicle body
- core layer
- car door
- lower frame
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/001—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material
- B62D29/005—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material preformed metal and synthetic material elements being joined together, e.g. by adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J5/00—Doors
- B60J5/04—Doors arranged at the vehicle sides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/02—Side panels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Body Structure For Vehicles (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a lightweight car body structure, which comprises a core layer (300), a middle layer (200) and an outer layer (100), wherein the core layer (300) is a support framework which is made of aluminum magnesium alloy, the core layer (300) is of a hollow structure of which the section is in a circular, quadrilateral or hexagonal shape; the middle layer (200) is made of plastic, the middle layer is made into a rib structure through a 3D (three dimensional) print technology, and the rib structure is of a honeycomb structure, a mesh structure or a spatial cell body structure; the outer layer (100) is formed by adhering a carbon fiber sheet to the surface of the resin material. In the invention, the weight of the car body is reduced; the high-polymer carbon fiber material and the aluminum magnesium alloy are rationally applied to the structure design of the car body, and properly replace the previous sheet metal structure material; in the condition of guaranteeing the safe strength and rigidity property, the weight of the car body is reduced and the fuel consumption is reduced.
Description
Technical field
The present invention relates to a kind of auto body section structure, particularly relate to one and can make weight-saving vehicle body section structure and using method thereof.
Background technology
Along with " energy-conserving and environment-protective " more and more become the topic of extensive concern, lightweight is also widely applied to general-utility car field, can also have outstanding fuel-economizing performance while raising is handling.The oil consumption of automobile depends primarily on the discharge capacity of driving engine and the total mass of automobile, under maintenance Integral automobile quality, performance and the constant prerequisite even optimized of cost, reduce automobile own wt can improve horsepower output, reduce noise, promote handling, reliability, improve the speed of a motor vehicle, reduce oil consumption, reduce discharge amount of exhaust gas, promote safety.Have research numerical monitor, if vehicle complete vehicle weight reduces by 10%, fuel efficiency can improve 6%-8%; If rolling resistance reduces 10%, fuel efficiency can improve 3%; If the driving efficiency of the device such as vehicle bridge, change-speed box improves 10%, fuel efficiency can improve 7%.Auto body accounts for 30% of automobile total mass, under no-load condition, and the oil consumption of about 70% is used on body quality.Therefore, vehicle body lightens all of great advantage for the fuel economy of car load, wagon control stability, crash survivability.
The lightweight of automobile, is exactly under the guarantee intensity of automobile and the prerequisite of safety performance, reduces the curb mass of automobile as much as possible, thus improve the dynamic property of automobile, reduce consumption of fuel, reduce exhaust pollution.Experiment proves, if vehicle complete vehicle weight reduces by 10%, fuel efficiency can improve 6%-8%; Automobile curb mass often reduces 100 kilograms, and fuel consumption of 100km can reduce by 0.3-0.6 liter; Vehicle weight reduces by 1%, and oil consumption can reduce by 0.7%.Current, due to environmental protection and energy-conservation needs, the lightweight of automobile has become the trend of world car development.
Nowadays the main path of automotive light weight technology is as follows:
(1) to the optimal design of body structure: automobile primary traffic specification vehicle Continuous optimization, under the prerequisite that specification principal parameter size retains, promote complete vehicle structure intensity, reduce consumptive material consumption;
(2) light material is adopted: as aluminium, magnesium, pottery, plastics, glass fibre or carbon fiber composite material etc.;
(3) computing machine is adopted to carry out structure design: as adopted finite element analysis, local strengthening design etc.;
(4) self-supporting body is adopted: thinning vehicle body sheet thickness etc.;
(5) advanced technologies is adopted: as linked together by vehicle body structure by welding, adhesive technology.
Above lightweight approach is all for existing sheet metal structural vehicle body, adjusts complete vehicle weight by reducing or controlling sheet metal use.Its relevant potential excavates the closely lowest limit, and patent of the present invention is devoted to design one more reasonably body structure form, reaches the object of Vehicle mass reduction.
But, the following defect of automotive light weight technology method of designing ubiquity of prior art:
(1) in traditional panel beating vehicle body a large amount of transition flange or welding scrap (bridge), there is the waste that non-utility function structure causes material, and cost and assembly difficulty larger.
(2) non-solder snap-in position in traditional panel beating vehicle body, often has panel beating on a large scale without related support structure, the easy stressed recurve of these position panel beating thin-walleds to be fallen into.Affect structural strength and human body sense organ.Such as car door, hair net, ceiling have the requirement of strength of dent resistance, and the meeting of dent resistance intensity certainly will strengthen thickness of slab or set up gusset or complex-curved structure sacrifices lightweight achievement.
(3) need to consider manufacture craft in a large number in traditional panel beating body drawing process, sheet stamping shape and the degree of depth all have its technological limits, and such as flange shaped negative angle structures cannot design enforcement.
(4) traditional sheet metal structural collision energy-absorbing, is mainly crushed areas reasonable in design and guides Path of Force Transfer.Actual because of planar splicing construction energy-absorbing very limited, and the present invention fundamentally adds endergonic structure distribution limit and size.
(5) traditional panel beating vehicle body sound insulation, heat-insulating property deficiency.Affect human body sense organ, on-board air conditioner load is comparatively large, and energy utilization rate is not high.
Summary of the invention
The present invention is intended to design the multiple composite material of a kind of comprehensive use and the efficient lightweight vehicle body section structure with technology.
Technical scheme of the present invention is to provide a kind of lightweight body structure, comprises core layer, interlayer, uppermost layer, wherein:
Core layer is the support frame that aluminum magnesium alloy is formed, and core layer is hollow structure, and its cross sectional shape is circle, quadrangle or hexagon;
Interlayer is that plastic material is made, and interlayer makes bead structures by 3D printing technique, and described bead structures is honeycomb structure, net structure or space cell structure;
Uppermost layer forms by pasting carbon fiber sheet outside resin material.
Beneficial effect of the present invention is:
1, good looking appearance, novelty, obtains inspiration from the lotus-like structure of the natural formation of occurring in nature, revises a little it, keeps the graceful camber line of its profile excessive, makes body structural member profile more mellow and fuller, have more curve aesthetic feeling.
2, adopt material, body quality alleviates, and carbon fiber High molecular material and aluminum magnesium alloy is reasonably applied on the structure design of vehicle body, sheet metal structural material before suitably substituting, under the intensity and toughness performance prerequisite ensureing safety, the quality of vehicle body is alleviated, oil consumption reduces.
3, advanced 3d printing technique is adopted, 3d printing technique is applied on body structural member, solve the drawback that traditional body drawing closure member cannot apply the manufacturing and break part obtains weakening on intensity and toughness, the performance of framing member under original design form is got a promotion.
4, texture is excellent, and the weighting material that vehicle body is heavy makes automobile change original hollow sensation, and vehicle body feels more solid.
5, with better function every making an uproar, plastic filler in section makes noise be weakened in propagation way, make to have more comfortable quiet environment in crew module, compare traditional sheet metal structural vehicle body, this vehicle body section structure is mainly aided with plastic rubber connector with aluminum magnesium alloy, carbon fibre material, the bending stiffness of effective enhancing vehicle body, and alleviate body quality.
Accompanying drawing explanation
Fig. 1 is body structure section of the present invention and cell structure signal.
Fig. 2 is the suitable application region according to a kind of body structure of the present invention.
Fig. 3 structure of the present invention is at the application sectional schematic diagram of vehicle body lower-edge beam.
Fig. 4 structure of the present invention is at car door application structure schematic diagram.
Fig. 5 structure of the present invention is at car bonnet application structure schematic diagram.
Wherein: 100 uppermost layeres, 200 interlayers, 300 core layers
1-car bonnet; 2-car body side bar; 3-car door; 4-vehicle body front stall doorframe lower frame section uppermost layer; 5-vehicle body front stall doorframe lower frame section interlayer; 6-vehicle body front stall doorframe lower frame section core layer; 7-door accessories; 8-car door core skeleton; 9-car door interlayer; 10-car door uppermost layer; 11-car bonnet uppermost layer; 12-car bonnet interlayer.
Detailed description of the invention
Below with reference to Fig. 1 to 5, concrete technical scheme of the present invention is described in detail.
As shown in Figure 1, the invention provides a kind of lightweight body structure, each functional area of vehicle body can be widely used in:
This structure can large-scale cavity and support structure, and vehicle body supports side bar, column, such as car body side bar 2.In addition this structure can be used for labyrinth function block, such as car door 3; Large area thin-walled functor can also be used in, such as engine case 1 etc.Adopt structure of the present invention without the need to the interlayer structure cooperation uppermost layer of core skeleton by means of only rationally arrange rib and filling mode, better dent resistance energy can be obtained, and higher bulk strength can be accomplished, obtain good collision energy-absorbing effect.
As shown in Figure 2, a kind of lightweight body structure of the present invention, comprises core layer 300, interlayer 200, uppermost layer 100, wherein:
Core layer 300 be aluminum magnesium alloy or other high-strength structure materials as support frame, core layer 300 makes the various shapes of hollow, as circle, quadrangle, hexagon etc., reaches suitable rigidity requirement as far as possible with the material of light weight;
Interlayer 200 is moderate strength, the plastic material that density is less is made, 3D printing technique can be used to make the bead structures of its complexity, as shown in Figure 3, its structure can be honeycomb structure, net structure, space cell structure, and interlayer 200 also can make breakaway-element or other various forms as required simultaneously;
Uppermost layer 100 forms by pasting carbon fiber sheet outside the resin material of high strength.
This uppermost layer can be obtained by the production technology of prior art.Representative production technology has carbon fiber to contact low pressure molding process, manual pasting forming process.Be characterized in that manual lay and the resin of carbon fibre reinforcement immerse, utilize vacuum bag or manual expression to discharge Excess resin, obtain the carbon fiber surface Rotating fields of compact.
As shown in Figure 3, structure of the present invention is for building the method for threshold side bar under car door, and specific design embodiment is as follows:
Step 1, vehicle body front stall doorframe lower frame section core layer 6 skeleton complete shape through process meanses such as roll bending, stretching, pressing molds and form;
Step 2, vehicle body front stall doorframe lower frame section core layer bone 6 frame are crossed fixture mount sizing adjustment and are cut to dimensions;
Step 3, that vehicle body front stall doorframe lower frame section core layer 6 skeleton is placed in car load assembling fixture is stand-by;
Step 4,3D print vehicle body front stall doorframe lower frame section interlayer 5;
Step 5, complete 3D and print vehicle body front stall doorframe lower frame section interlayer 5 and assemble, adopt the coated core layer skeleton of make-up form, or 3D prints interlayer and is directly inserted in vehicle body front stall doorframe lower frame section core layer 6, auxiliary gluing or die mould location is taked to strengthen the Joint strenght of core layer 6 and interlayer 5;
Step 6, fabricate block vehicle body front stall doorframe lower frame section interlayer 5 and vehicle body front stall doorframe lower frame section core layer 6 formed, as bodywork component.By bolt, that bonding etc., technique type of attachment forms vehicle body is overall;
Step 7, vehicle body front stall doorframe lower frame section uppermost layer 4 use carbon fiber manual pasting forming process, and resin infiltrates manual subsides and is coated with laying high-strength degree carbon cloth;
Step 8, outward appearance japanning sanding and polishing.
As shown in Figure 4, structure of the present invention is for building the method for automobile door body, and specific design embodiment is as follows:
Step 1, car door core skeleton 8 complete shape by process meanses such as roll bending, stretching, pressing molds and form.
Step 2, car door core skeleton 8 are cut to dimensions by fixture mount sizing adjustment.
Step 3, that car door core skeleton 8 is positioned over car load assembling fixture is stand-by.
Step 4,3D print car door interlayer 9 to be prepared.
Step 5,3D print car door interlayer 9 and assemble, and adopt the coated car door core skeleton 8 of make-up form.Auxiliary gluing or die mould location is taked to strengthen core layer and interlayer Joint strenght.
The fabricate block that step 6, car door interlayer 9 and car door core skeleton 8 are formed, as bodywork component, forms vehicle body entirety by bolt, bonding etc., technique type of attachment.
Step 7, the suitable fitting of door of shunting of installation.
Step 8, use carbon fiber cladding process, resin infiltrates manual subsides and is coated with laying high-strength degree carbon cloth.
Step 9, outward appearance japanning sanding and polishing.
As shown in Figure 5, structure of the present invention is for building the method for car bonnet, and specific design embodiment is as follows:
Step 1,3D print engine cover interlayer 12.
The assembling of step 2,3D print engine cover interlayer 12 adopts unit clamp spelling group car bonnet interlayer 12.
Step 3, installation are fitted and are readjusted the distribution cover upper lock body, hinge annex.
Step 4, use carbon fiber manual pasting forming process, resin infiltrates manual subsides and is coated with laying high-strength degree carbon cloth.
Step 5, outward appearance japanning sanding and polishing.
As can be seen here, the present invention breaks through the limitation of traditional sheet metal structural vehicle body, provides a kind of stiffness and strength to be applicable to actual service condition, can meet again the body structure form of fracture of body lightening requirement simultaneously.
Claims (3)
1. a lightweight body structure, comprises core layer (300), interlayer (200), uppermost layer (100), wherein:
The support frame that core layer (300) is formed for aluminum magnesium alloy, core layer (300) is hollow structure, and its cross sectional shape is circle, quadrangle or hexagon;
Interlayer (200) is made for plastic material, and interlayer makes bead structures by 3D printing technique, and described bead structures is honeycomb structure, net structure or space cell structure;
Uppermost layer (100) is laid for high-strength carbon fiber cloth and is formed.
2. lightweight body structure described in claim 1 is for building the method for threshold side bar under car door, it is characterized in that:
Step 1, vehicle body front stall doorframe lower frame section core layer (6) skeleton complete planform through roll bending, stretching, stamping technique means;
Step 2, vehicle body front stall doorframe lower frame section core layer (6) skeleton are shaped by fixture mount, adjust, are cut to dimensions;
Step 3, that vehicle body front stall doorframe lower frame section core layer (6) skeleton is placed in car load assembling fixture is stand-by;
Step 4,3D print vehicle body front stall doorframe lower frame section interlayer (5);
Step 5, complete 3D and print vehicle body front stall doorframe lower frame section interlayer (5) assembling, adopt the coated core layer skeleton of make-up form or 3D printed interlayer and be directly inserted in vehicle body front stall doorframe lower frame section core layer (6);
Step 6, fabricate block vehicle body front stall doorframe lower frame section interlayer (5) and vehicle body front stall doorframe lower frame section core layer (6) formed, as bodywork component;
Step 7, vehicle body front stall doorframe lower frame section uppermost layer (4) use carbon fiber manual pasting forming process, infiltrate manual subsides be coated with laying high-strength degree carbon cloth by resin;
Step 8, outward appearance japanning sanding and polishing.
3. described in claim 1, lightweight body structure, for building the method for automobile door body, is characterized in that
Step 1, car door core skeleton (8) complete planform by roll bending, stretching, stamping technique means;
Step 2, car door core skeleton (8) are shaped by fixture mount, adjust, are cut to dimensions;
Step 3, that car door core skeleton (8) is positioned over car load assembling fixture is stand-by;
Step 4,3D print car door interlayer (9) preparation;
Step 5,3D print car door interlayer (9) assembling, adopt make-up form coated car door core skeleton (8), and take auxiliary gluing or die mould location to strengthen car door core skeleton (8) and interlayer (9) Joint strenght;
The fabricate block that step 6, car door interlayer (9) and car door core skeleton (8) are formed, as bodywork component;
Step 7, the suitable fitting of door of shunting of installation;
Step 8, use carbon fiber cladding process, infiltrate manual subsides by resin and be coated with laying high-strength degree carbon cloth;
Step 9, outward appearance japanning sanding and polishing.
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| CN201510012934.1A CN104590397B (en) | 2015-01-12 | 2015-01-12 | Application method for section structure of lightweight car body |
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| CN201510012934.1A CN104590397B (en) | 2015-01-12 | 2015-01-12 | Application method for section structure of lightweight car body |
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| CN104590397B CN104590397B (en) | 2017-05-10 |
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| CN106513572A (en) * | 2016-09-30 | 2017-03-22 | 宁夏共享模具有限公司 | 3d printing sand mould and manufacturing method thereof |
| DE102015219784A1 (en) * | 2015-10-13 | 2017-04-13 | Bayerische Motoren Werke Aktiengesellschaft | Method for producing a component with a functional section for a vehicle and component with functional section |
| US9718498B1 (en) | 2016-04-08 | 2017-08-01 | Ford Global Technologies, Llc | Vehicular body structure |
| US9845115B2 (en) | 2016-02-19 | 2017-12-19 | Ford Global Technologies, Llc | One-piece closure member for a vehicle |
| CN108263497A (en) * | 2016-12-31 | 2018-07-10 | 郑州吉田专利运营有限公司 | Carbon fabric composite material vehicle skeleton and preparation method thereof |
| CN108263496A (en) * | 2016-12-31 | 2018-07-10 | 郑州吉田专利运营有限公司 | Carbon fabric composite material vehicle skeleton and preparation method thereof |
| CN108262983A (en) * | 2016-12-31 | 2018-07-10 | 郑州吉田专利运营有限公司 | Carbon fabric composite material vehicle skeleton and preparation method thereof |
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| CN109292025A (en) * | 2017-07-25 | 2019-02-01 | 戴弗根特技术有限公司 | Method and apparatus for the transport structure based on increasing material manufacturing endoskeleton |
| CN109466304A (en) * | 2018-11-19 | 2019-03-15 | 华侨大学 | A kind of light weight engine mounting that drop vibration suction is made an uproar |
| CN109703624A (en) * | 2018-12-29 | 2019-05-03 | 吉林大学 | A kind of automobile roof beam and preparation method thereof with transverse property |
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| DE102015219784A1 (en) * | 2015-10-13 | 2017-04-13 | Bayerische Motoren Werke Aktiengesellschaft | Method for producing a component with a functional section for a vehicle and component with functional section |
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| US9718498B1 (en) | 2016-04-08 | 2017-08-01 | Ford Global Technologies, Llc | Vehicular body structure |
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| CN108263496A (en) * | 2016-12-31 | 2018-07-10 | 郑州吉田专利运营有限公司 | Carbon fabric composite material vehicle skeleton and preparation method thereof |
| CN108262983A (en) * | 2016-12-31 | 2018-07-10 | 郑州吉田专利运营有限公司 | Carbon fabric composite material vehicle skeleton and preparation method thereof |
| CN108263497A (en) * | 2016-12-31 | 2018-07-10 | 郑州吉田专利运营有限公司 | Carbon fabric composite material vehicle skeleton and preparation method thereof |
| CN109292025A (en) * | 2017-07-25 | 2019-02-01 | 戴弗根特技术有限公司 | Method and apparatus for the transport structure based on increasing material manufacturing endoskeleton |
| US10906236B2 (en) | 2018-01-25 | 2021-02-02 | Ford Global Technologies, Llc | Article with solid, lattice, and hollow sub-regions |
| WO2019236831A1 (en) | 2018-06-06 | 2019-12-12 | Divergent Technologies, Inc. | Additively manufactured structures for vehicle doors |
| EP3802132A4 (en) * | 2018-06-06 | 2022-03-16 | Divergent Technologies, Inc. | Additively manufactured structures for vehicle doors |
| CN108639156A (en) * | 2018-06-12 | 2018-10-12 | 苏州普热斯勒先进成型技术有限公司 | White body and its manufacturing process |
| CN113165705A (en) * | 2018-11-15 | 2021-07-23 | 雷诺股份公司 | Instrument panel body with porous structure and integrated fluid circulation conduit |
| CN113165705B (en) * | 2018-11-15 | 2023-09-26 | 雷诺股份公司 | Instrument panel body with porous structure and integrated fluid circulation duct |
| CN109466304A (en) * | 2018-11-19 | 2019-03-15 | 华侨大学 | A kind of light weight engine mounting that drop vibration suction is made an uproar |
| CN109703624A (en) * | 2018-12-29 | 2019-05-03 | 吉林大学 | A kind of automobile roof beam and preparation method thereof with transverse property |
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