CN108710775B - Auditory ossicle chain transmission mechanism-based damping system and design method - Google Patents
Auditory ossicle chain transmission mechanism-based damping system and design method Download PDFInfo
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- 238000013016 damping Methods 0.000 title claims abstract description 38
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- 238000013461 design Methods 0.000 title claims abstract description 12
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- G06F30/20—Design optimisation, verification or simulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
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Abstract
The invention provides a damping system based on an ossicular chain transmission mechanism and a design method. The method comprises the following steps: s1, establishing an auditory ossicle three-dimensional model through three-dimensional software; s2, determining the material of the ossicular chain and the alpha angle of the rotary axis of the anvil joint with good vibration transmission effect; s3, importing the drawn auditory ossicle model into dynamics and kinematics simulation software, and adding preset materials to ligaments around a malleus, an incus, a stapes and an auditory ossicle so as to construct a complete auditory ossicle chain model; and S4, simulating the connection relation and the relative position of each component in the ossicular chain by manufacturing a real object, and testing and improving until a damping system with good damping effect is obtained. The invention can better protect the safety of equipment and constructors in a factory, and can be applied to the field of transportation to ensure that the shock absorption performance of the seat is better.
Description
Technical Field
The invention relates to the technical field of damping equipment, in particular to a damping system based on an ossicular chain transmission mechanism and a design method.
Background
With the development of society and economy, the requirements of people on life and working quality are higher and higher. Nowadays, people not only require safety and reliability, but also require comfortable journey, and the research and development of the shock absorber is particularly important. The vibration absorber can play a role in reducing or reducing the influence of vibration on equipment and personnel, so that certain equipment and personnel are prevented from being influenced by bad vibration, and the vibration absorber plays a role in protecting the normal work and safety of the equipment and the personnel, so that the vibration absorber is widely applied to frequent lifting of various machines and the like. However, the existing vibration damper has problems, such as: although the common oil/air pressure shock absorber has a simple structure and is convenient to maintain, the common oil/air pressure shock absorber has short service life, high process requirement and relatively more time for maintenance and repair. For some specific occasions, such as the damping adjustable shock absorber, the structure is complicated, the cost is high, and the defects of no universality exist.
Disclosure of Invention
According to the technical problems, the invention provides a method for designing a damping system based on an ossicular chain transmission mechanism, and the method is characterized in that the damper manufactured by the bionic ossicular chain is designed and improved according to the characteristics that the ossicular chain damping system has high response speed, strong self-adaptive adjustment capability, easy introduction and control, strong low-frequency induction, easy attenuation of high-frequency vibration energy and almost no change of sound transmission function with age, and the obtained damper has a simple internal structure and can effectively protect the personal safety of equipment and workers.
The technical means adopted by the invention are as follows:
a design method of a damping system based on an ossicular chain transmission mechanism comprises the following steps:
s1, establishing a three-dimensional model of the auditory ossicle through three-dimensional software, wherein the auditory ossicle comprises a malleus, an incus and a stapes;
s2, testing the stapes anvil displacement ratio, the stapes anvil velocity ratio and the stapes anvil acceleration ratio by adjusting the elastic damping ratio of the muscles and ligaments around the auditory ossicles, determining the ligament material around the auditory ossicle chain, determining the materials of the malleus, the incus and the stapes by the material characteristics of the malleus, the incus and the stapes obtained in the test and the literature, and testing the stapes anvil displacement ratio, the stapes anvil velocity ratio and the stapes anvil acceleration ratio by adjusting the alpha angle of the rotation axis of the joint of the malleus, thereby determining the alpha angle with good vibration transmission effect;
s3, introducing the drawn auditory ossicle model into dynamics and kinematics simulation software, adding preset materials to ligaments around the malleus, the incus, the stapes and the auditory ossicles, and determining the connection relation among the malleus, the incus and the stapes according to the preferred alpha angle so as to construct a complete auditory ossicle chain model;
s4, simulating the connection relation and the relative position of each component in the ossicular chain by manufacturing a real object, additionally arranging a shell for protecting the inner ear simulation function of the ossicular chain, applying external force to the real object, gradually testing various defects with unreasonable design, and carrying out corresponding improvement and simplification until obtaining the shock absorption system with good shock absorption effect.
Further, in step S3, the following steps are further provided after the complete ossicular chain model is constructed:
the change values of stapes displacement and acceleration are obtained by applying force to the malleus handle, so that the auditory ossicle is determined to have the damping effect.
Further, in step S3, after determining that the ossicle has the shock absorbing effect, the following steps are further provided:
by adding various simulated kinematic pairs at the anvil hammering joint, force is applied to a malleus handle, and the change values of stapes displacement and acceleration are obtained, so that a suitable pair for simulating stapes motion is determined.
Further, in step S3, after determining the appropriate pair for simulating stapes movement, the following steps are provided: and simulating the change condition of the hammer anvil displacement under different frequencies on the auditory ossicular chain model to obtain the stable frequency of the displacement, speed and acceleration of the hammer stirrup.
Further, in the step S4, the improvement comprises: the malleus handle of the malleus part of the shock absorber is changed into a vibration contact surface different from the malleus of a human ear, and the center of the cross section of the malleus handle and the center of the stapes are arranged on the same straight line.
The invention also provides a damping system based on the ossicular chain transmission mechanism, which comprises the following components: the bionic human ear auditory ossicle chain comprises a damper main body and a damper shell, wherein the damper main body is assembled in the damper shell, the damper main body comprises a bionic malleus portion, a bionic incus portion and a bionic stapes portion, the bionic malleus portion comprises a malleus handle portion, a malleus head portion and a connecting portion, the upper bottom surface and the lower bottom surface of the malleus handle portion are respectively provided with a preset radian, the malleus head portion is consistent with the shape of the malleus head portion of a human ear, the connecting portion is connected with the lower bottom surface of the malleus handle portion and the malleus head portion, the bionic incus portion comprises an incus long protruding portion, the malleus joint portion and the stapes bottom portion are matched with the shape of the malleus head portion, the malleus head portion and the malleus joint portion are connected, a through hole of an adaptive connecting rod is formed in the horizontal direction, the connecting rod penetrates through the bionic malleus portion and the bionic incus portion and is fixed on the damper shells on two sides, the incudostapedial joint is connected to the stapes footplate portion by a spring.
Further, the center of the cross section of the hammer shank is collinear with the center of the biomimetic stirrup.
Compared with the prior art, the invention has the following advantages:
the invention simulates a set of ossicle chain transmission mechanism-based damping system with high response speed and self-adaptive adjustment capability through modeling analysis of the ossicle chain transmission mechanism and simulation of ossicles, surrounding muscles and ligaments, and adjusts the position structures and rotation modes among components, thereby obtaining the optimal solution suitable for production and life, protecting the safety of equipment and constructors in a factory, and meanwhile, the invention can also be applied to the field of traffic transportation, so that the damping performance of a seat is better, and passengers are more comfortable and reassured.
Based on the reason, the invention can be widely popularized in the field of damping equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of a damping system design method based on an ossicular chain transmission mechanism.
Fig. 2 is a three-dimensional model of the auditory ossicle simulation of the present invention, wherein (a) is a three-dimensional model of the malleus, (b) is a three-dimensional model of the incus, (c) is a three-dimensional model of the stapes, and (d) is a model of the auditory ossicle simulation as a whole.
Fig. 3 is a diagram showing the displacement and acceleration changes of the malleus and the stapes obtained by applying an input force to the bottom of the scapus of the ossicle after the material properties of the ossicle are applied, wherein (a) is a waveform diagram showing the displacement changes of the malleus, (b) is a waveform diagram showing the displacement changes of the stapes, (c) is a waveform diagram showing the acceleration changes of the malleus, and (d) is a waveform diagram showing the acceleration changes of the stapes.
Fig. 4 is a graph showing the variation of malleus, stapes displacement and acceleration obtained by a given fixed frequency when k/c of ligament of the present invention is 10, wherein (a) is a waveform showing the variation of malleus displacement, (b) is a waveform showing the variation of stapes displacement, (c) is a waveform showing the variation of malleus acceleration, and (d) is a waveform showing the variation of stapes acceleration.
Fig. 5 is a graph showing the change in the displacement of the malleus, the stapes, and the acceleration obtained when the angle α of the rotation axis of the anvil joint changes according to the present invention, wherein (a) is a graph showing the change waveform of the displacement of the malleus, (b) is a graph showing the change waveform of the stapes displacement, (c) is a graph showing the change waveform of the acceleration of the malleus, and (d) is a graph showing the change waveform of the acceleration of the stapes.
FIG. 6 is a diagram showing the variation of the displacement and acceleration of the malleus and the stapes, wherein (a) is a diagram showing the variation waveform of the displacement of the malleus, (b) is a diagram showing the variation waveform of the displacement of the stapes, (c) is a diagram showing the variation waveform of the acceleration of the malleus, and (d) is a diagram showing the variation waveform of the acceleration of the stapes.
FIG. 7 is a comparison of the use of a revolute pair and an elastic body in an anvil joint of the present invention, wherein (a), (b), (c), (d) are the use of a revolute pair, (e), (f), (g), (h) are the use of an elastic body, (a) (e) is a waveform of change in displacement of the malleus, (b), (f) is a waveform of change in displacement of the stapes, (c), (g) is a waveform of change in acceleration of the malleus, and (d), (h) is a waveform of change in acceleration of the stapes.
FIG. 8 is a graph showing the variation of the parameters of the anvil at different frequencies in the kinetic model of the present invention, wherein (a) is a graph showing the variation of the displacement ratio of the anvil at different frequencies, (b) is a graph showing the variation of the velocity ratio of the anvil at different frequencies, and (c) is a graph showing the variation of the acceleration of the anvil at different frequencies.
FIG. 9 is a diagram of a simulated model of the damping system of the present invention, wherein (a) is a simulated malleus portion, (b) is a simulated incus portion, (c) is an incus stapes joint portion of a simulated stapes portion, and (d) is a stapes footplate portion of a simulated stapes portion.
Fig. 10 is a schematic view of a vibration damping system based on an ossicular chain transmission mechanism according to the present invention.
Fig. 11 is an exploded view of the shock absorbing system with a bionic ossicular chain structure according to the present invention.
In the figure: 1. a hammer shank; 2. a connecting portion; 3. a hammer head; 4. an anvil joint portion; 5. an incus long process; 6. an incudostapedial joint; 7. a stapes footplate portion; 8. a connecting rod.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
When the auditory ossicles are subjected to a medium intensity sound pressure, the stapes footplate vibrates along the vertical (minor) axis of its hind foot, and when the sound intensity approaches the threshold, the stapes footplate swings along its antero-posterior (major) axis. The invention not only can well protect the ossicular chain from being damaged, but also can greatly reduce the impact of strong vibration on the oval window and protect the inner ear from being damaged by strong vibration.
As shown in fig. 1, the invention provides a method for designing a damping system based on an ossicular chain transmission mechanism, which comprises the following steps:
s1, creating a three-dimensional model of the auditory ossicle through the three-dimensional software as shown in fig. 2(d), wherein the auditory ossicle includes a malleus as shown in fig. 2(a), an incus as shown in fig. 2(b) and a stapes as shown in fig. 2 (c);
the physical and mechanical parameters of the auditory ossicles are measured by foreign scholars through experiments, the models are endowed with different material characteristics such as a malleus, an incus, a stapes and the like, and the Poisson ratio is 0.3, wherein the material parameters of the finite element models of the middle ear are shown in a table 1, and the model sizes of the auditory ossicles of human ears are shown in a table 2 through reference of documents.
TABLE 1
TABLE 2
The auditory ossicle is given with material properties, the base of the pedicle is given with a sine function with an input force value P (t) 50 sin (wt), the displacement ratio of the anvil and the acceleration ratio are measured, the displacement of the malleus and the stapes changes as shown in fig. 3(a) and 3(b), and the acceleration of the malleus and the stapes changes as shown in fig. 3(c) and 3 (d). Simulation results show that: the model of the ossicles substantially conforms to the numerical ratio of the ossicles, and the movement is relatively more stable.
S2, testing the stapes anvil displacement ratio, the stapes anvil velocity ratio and the stapes anvil acceleration ratio by adjusting the elastic damping ratio of the muscles and ligaments around the auditory ossicles, determining the ligament material around the auditory ossicle chain, determining the materials of the malleus, the incus and the stapes by the material characteristics of the malleus, the incus and the stapes obtained in the test and the literature, and testing the stapes anvil displacement ratio, the stapes anvil velocity ratio and the stapes anvil acceleration ratio by adjusting the alpha angle of the rotation axis of the joint of the malleus, thereby determining the alpha angle with good vibration transmission effect;
the ligament is connected around the ossicle, and plays the effect of fixed position of bone and ossicle restoration in the ossicle work process, and the experiment is difficult to record the real material parameter of ligament, and the parameter is nonlinear. No accurate material parameters have been determined so far. In the relevant literature, the Yang modulus of the ligament is generally a range value, in order to determine the best Yang modulus of the ligament in the model, the damping of the ligament is given as 10, the elastic damping ratio of the ligament is a ratio of 1,5,10 and 50,100, and the indexes are respectively considered by the displacement ratio of the stapes anvil, the velocity ratio of the stapes anvil and the acceleration ratio of the stapes anvil. Given a fixed frequency, the experimental results are shown in table 3:
TABLE 3
At a ligament k/c of 10, the stapes anvil displacement is as shown in fig. 4(a), 4(b), and the stapes anvil acceleration is as shown in fig. 4(c), 4(d), given a fixed frequency of 20 Hz.
Simulation results show that: when the ligament k/c ratio is between 100 and 50, the displacement ratio, velocity ratio and angular acceleration ratio of the stapes are large, and the displacement of the stapes at high frequencies shows a tendency to decline, which is probably due to the ligament k/c being too large and insufficient damping. The displacement ratio, velocity ratio and angular acceleration ratio of the anvil stapes are small when the k/c ratio of the ligament is 1 and 5, which is probably due to the fact that the spring cannot be controlled because the k/c of the ligament is too small, and in conclusion the ossicle is moved optimally when the k/c of the ligament is 10.
The document shows that during the operation of the ossicles, the ossicular chain rotates about a lever axis on the line between the anterior ligament of the malleus neck and the short process of the incus. The long process of the hammer handle and the long process of the incus can be respectively regarded as the long arm and the short arm of the lever by taking the moving shaft of the auditory ossicle chain as a fulcrum. The quality of the ossicles is approximately equal on both sides of the axis of motion. However, no literature is provided on the angle of the axis, and in order to determine the influence of the rotation axis alpha angle of the hammer anvil joint of the model on the vibration reduction of an auditory ossicle dynamic system, the rotation axis alpha angle of the hammer anvil joint is taken as-10, 0,10,20 and 30 as simulation parameters of the model respectively, and indexes are investigated by using a stapes displacement ratio, a stapes velocity ratio and a stapes acceleration ratio. Given a fixed frequency, the experimental results are shown in table 4:
TABLE 4
By changing the angle of the anvil joint rotation axis α, a waveform diagram of change in malleus displacement suitable for analysis is shown in fig. 5(a), a waveform diagram of change in stapes displacement is shown in fig. 5(b), a waveform diagram of change in malleus acceleration is shown in fig. 5(c), and a waveform diagram of change in stapes acceleration is shown in fig. 5 (d).
Simulation results show that: the damping effect of the displacement ratio, velocity ratio and angular acceleration ratio of the anvil stapes is inferior to that when the anvil joint rotation axis α angle is 30 when the anvil joint rotation axis α angle is-10, 1, 20,30, since it is calculated by the lever theorem when the anvil joint rotation axis α angle is-10, 1. This is because when the angle α of the rotation axis of the anvil joint is 20,30 degrees, the ligament and the spring cannot work, the anvil has poor vibration transmission effect, and the transmission difference in different frequency bands is large.
S3, introducing the drawn auditory ossicle model into dynamics and kinematics simulation software, adding preset materials to ligaments around the malleus, the incus, the stapes and the auditory ossicles, and determining the connection relation among the malleus, the incus and the stapes according to the preferred alpha angle so as to construct a complete auditory ossicle chain model; the method comprises the steps of obtaining the change values of stapes displacement and acceleration by applying force to a malleus handle, determining that the auditory ossicle has a damping effect, adding various types of simulation kinematic pairs at a hammering block joint, applying force to the malleus handle, obtaining the change values of stapes displacement and acceleration, determining a pair suitable for simulating stapes movement, simulating the change conditions of the hammer anvil displacement under different frequencies on an auditory ossicular chain model, and obtaining the stable frequency of the displacement, speed and acceleration of the stapes.
The force value of the given force of the hammerhead stem is P (t) ═ 50 sin (wt), the hammer anvil joint adopts a revolute pair, the displacement of the hammerhead and the stapes is changed as shown in figures 6(a) and 6(b), the acceleration of the hammerhead and the stapes is changed as shown in figures 6(c) and 6(d), and the simulation result shows that the auditory ossicle has the functions of smaller displacement ratio of the hammerhead and larger acceleration ratio after the input vibration signal is transmitted through the auditory ossicle chain. Here, it is demonstrated that the auditory ossicles have a shock absorbing effect.
When the hammer joint adopts a revolute pair, the change of the displacement of the malleus and the stapes is shown in figures 7(a) and 7(b), the change of the acceleration of the malleus and the stapes is shown in figures 7(c) and 7(d),
when the hammer joint is made of an elastic body, the change in the displacement of the malleus and the stapes is shown in fig. 7(e) and 7(f), and the change in the acceleration of the malleus and the stapes is shown in fig. 7(g) and 7 (h).
From the simulation results, it can be seen that there are two different effects when adding a flexible body at the anvil joint and simulating the ligament at the joint with a rotating pair. Obviously, the effect of adding the simulated rotating pair at the anvil hammering joint is better according to the overall form of the movement. After a number of kinematic pairs have been tried in the incudostapedial joint by means of simulation, the mobile pair was found to be the best one simulating the stapes movement.
The damping coefficient 10 and the elastic coefficient 100 of the ligament around the ossicle were obtained in the above work. And the anvil joint rotation axis alpha angle is 10 deg.. The rotary pair is selected at the anvil joint, the sliding pair is selected at the anvil stapes joint, and the given force is F (t) ═ sin (2 × pi × (t)). The stapes anvil displacement ratio, the stapes anvil velocity ratio, and the stapes anvil acceleration ratio are measured at frequencies of 1 to 1000hz, respectively. The simulation of the change of the displacement of the anvil at different frequencies is shown in fig. 8 (a); the change in anvil velocity at different frequencies is shown in FIG. 8 (b); the change in anvil acceleration at different frequencies is shown in FIG. 8(c), where the greater part of the malleus-related curve is higher than the anvil-related curve.
Simulation results show that: when the frequency is within 400Hz, the displacement, speed and acceleration of the stapes of the hammer basically maintain stable ratios, and when the frequency is greater than 400Hz, the muscle plays a control role at this time, and the speed and acceleration of the stapes are obviously reduced. The vibration reduction effect in which frequency range is determined is good, the change of which frequency under different frequencies is small in the change of the acceleration displacement ratio of the hammer anvil, and the bionic vibration absorber can be far away from a resonance area during working, so that the bionic vibration absorber can work stably in the frequency band during working.
S4, simulating the connection relation and the relative position of each component in the ossicular chain by manufacturing a real object, additionally arranging a shell for protecting the inner ear simulation function of the ossicular chain, applying external force to the real object, gradually testing various defects with unreasonable design, and carrying out corresponding improvement and simplification until obtaining the shock absorption system with good shock absorption effect.
The improvement comprises: the malleus handle of the malleus part of the shock absorber is changed into a vibration contact surface different from the malleus of a human ear, and the center of the cross section of the malleus handle and the center of the stapes are arranged on the same straight line.
Through improvement and strength analysis, the maximum strain force between the handle and the head of the hammer bone is likely to lose the working ability due to the sudden impact force during working. The middle portion of the pedicle is most stressed, and the pedicle should be optimized during the process, such as increasing the thickness of the pedicle. The stapes is substantially undeformed. When the stress of the shock absorption system is 10N, the shock absorption system basically has no strain, but the handle and the hammerhead are the weakest links and need to be optimized.
According to the optimization, the vibration damping system based on the ossicular chain transmission mechanism provided by the application is obtained, and as shown in fig. 9 to 11, the vibration damping system comprises: the bionic human ear auditory ossicle chain comprises a damper main body and a damper shell, wherein the damper main body is assembled in the damper shell, the damper main body comprises a bionic malleus portion, a bionic incus portion and a bionic stirrup portion, the bionic malleus portion comprises a malleus handle portion 1, a hammerhead portion 3 and a connecting portion 2, the upper bottom surface and the lower bottom surface of the hammerhead portion are respectively provided with a preset radian, the hammerhead portion is consistent with the shape of the head portion of a human ear malleus, the connecting portion 2 is connected with the lower bottom surface and the hammerhead portion of the hammerhead portion, the bionic incus portion comprises a hammerhead joint portion 4 and a hammerhead joint portion, the hammerhead joint portion 4 is matched with the hammerhead portion in shape, the long process portion 5 is extended from the hammerhead portion, the stirrup joint portion 6 and a stirrup bottom plate portion 7 are connected with the long process portion 5, a through hole of an adaptive connecting rod 8 is formed in the horizontal direction after the hammerhead portion 3 is connected with the hammerhead portion 4, the connecting rod 8 passes through the malle, the incudostapedial joint part 6 is connected to the stapes footplate part 7 by a spring.
The center of the cross section of the hammer handle part 1 and the center of the bionic stapes part are positioned on the same straight line.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A design method of a damping system based on an ossicular chain transmission mechanism is characterized by comprising the following steps:
s1, establishing a three-dimensional model of the auditory ossicle through three-dimensional software, wherein the auditory ossicle comprises a malleus, an incus and a stapes;
s2, testing the stapes anvil displacement ratio, the stapes anvil velocity ratio and the stapes anvil acceleration ratio by adjusting the elastic damping ratio of the muscles and ligaments around the auditory ossicles, determining the ligament material around the auditory ossicle chain, determining the materials of the malleus, the incus and the stapes by the material characteristics of the malleus, the incus and the stapes obtained in the test and the literature, and testing the stapes anvil displacement ratio, the stapes anvil velocity ratio and the stapes anvil acceleration ratio by adjusting the alpha angle of the rotation axis of the joint of the malleus, thereby determining the alpha angle with good vibration transmission effect;
s3, introducing the drawn auditory ossicle model into dynamics and kinematics simulation software, adding preset materials to ligaments around the malleus, the incus, the stapes and the auditory ossicles, and determining the connection relation among the malleus, the incus and the stapes according to the preferred alpha angle so as to construct a complete auditory ossicle chain model;
s4, simulating the connection relation and the relative position of each component in the ossicular chain by manufacturing a real object, additionally arranging a shell for protecting the inner ear simulation function of the ossicular chain, applying external force to the real object, gradually testing various defects with unreasonable design, and carrying out corresponding improvement and simplification until obtaining the shock absorption system with good shock absorption effect.
2. The design method of the ossicular chain transmission mechanism-based damping system according to claim 1, wherein in the step S3, the following steps are further provided after the complete ossicular chain model is constructed: the change values of stapes displacement and acceleration are obtained by applying force to the malleus handle, so that the auditory ossicle is determined to have the damping effect.
3. The method for designing a damping system based on an ossicular chain transmission mechanism according to claim 2, wherein the step S3 is further provided with the following steps after determining that the ossicle has a damping effect: by adding various simulated kinematic pairs at the anvil hammering joint, force is applied to a malleus handle, and the change values of stapes displacement and acceleration are obtained, so that a suitable pair for simulating stapes motion is determined.
4. The method for designing a vibration damping system based on an ossicular chain transmission mechanism according to claim 3, wherein the step of determining the fitting pair simulating stapes movement in step S3 further comprises the steps of: and simulating the change condition of the hammer anvil displacement under different frequencies on the auditory ossicular chain model to obtain the stable frequency of the displacement, speed and acceleration of the hammer stirrup.
5. The ossicular chain drive mechanism based damping system design method according to claim 1, wherein in step S4, the improvement comprises: the malleus handle of the malleus part of the shock absorber is changed into a vibration contact surface different from the malleus of a human ear, and the center of the cross section of the malleus handle and the center of the stapes are arranged on the same straight line.
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