Abstract
A type of triaxial platform which can apply X, Y, and Z three direction load forces simultaneously to the testing specimen is introduced. It can be used for kinds of automobile parts’ testing, such as intermediate bearing of drive shaft (IBDS), engine suspension cushion, connection rod, and control arm bushing. All these parts have two connection ends, one of which can move in at least three directions relative to the other. The kinematical characteristic and kinetic performance of this platform are analyzed. An example of the triaxial platform used on IBDS is introduced.
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Abbreviations
- DOF:
-
Degree of freedom
- n :
-
Number of components
- g :
-
Number of motion pairs
- \(f_{{i}}\) :
-
DOF of motion pair i
- lx, ly, lz:
-
Length of the rods
- α, β, γ:
-
Deviation angles
- \(\varvec{D}\) :
-
Input displacement of the platform
- X :
-
Output displacement of the platform
- αX, βY, γZ:
-
Projections of α, β, γ to X-, Y-, Z-coordinates, respectively
- \(\left[ {x_{\text{A}} , y_{\text{A}} , z_{\text{A}} } \right]\) :
-
Coordinate value of point A
- \(M_{l}^{i}\) :
-
Mass of rod i
- \(M_{\text{p}}\) :
-
Mass of platform and fixture
- \(M\) :
-
Mass of moving section of specimen
- \(\varvec{a}_{\varvec{i}}\) :
-
Acceleration of rod i
- \(\varvec{a}\) :
-
Acceleration of platform
- \(a_{X} ,\varvec{ }a_{Y} , a_{Z}\) :
-
Component of platform acceleration on X,Y, Z axis, respectively
- \(\varvec{C}\) :
-
The damping coefficient of the specimen
- \(\varvec{K}\) :
-
Stiffness of the specimen
- F :
-
Driven force
- F′:
-
Force load on the specimen
- \(F_{\text{out}}\) :
-
Load cell indication
- \(F_{\text{real}}\) :
-
Real force loaded on specimen
- DS :
-
Driven signal matrix
- DES :
-
Desired signal matrix of road data
- FRF :
-
Frequency response function matrix
- FRF −1 :
-
Inverse of FRF
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© 2019 Springer Nature Singapore Pte Ltd.
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Xiao, C., Liu, T. (2019). Design of Triaxial Platform Used on Automobile Parts’ Testing. In: (SAE-China), S. (eds) Proceedings of the 19th Asia Pacific Automotive Engineering Conference & SAE-China Congress 2017: Selected Papers. SAE-China 2017. Lecture Notes in Electrical Engineering, vol 486. Springer, Singapore. https://doi.org/10.1007/978-981-10-8506-2_44
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DOI: https://doi.org/10.1007/978-981-10-8506-2_44
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